Toyota DTC codes lookup free - Free Repair Guide

Free Toyota DTC Codes Lookup – <a href="https://toyotaspace.com/toyota-dtc-c2121/" data-internallinksmanager029f6b8e52c="3" title="Toyota DTC C2121">Diagnostic</a> Trouble Codes Database

🚗 Free Toyota DTC Codes Lookup

Comprehensive Diagnostic Trouble Codes Database for All Toyota Models

Code	Description	System	Severity	Common_Causes	Suggested_Action	Toyota_Models	Years
P0010	A Camshaft Position Actuator Circuit	Engine	Medium	VVT solenoid failure; wiring issues; oil flow problems	Check VVT solenoid; verify oil level and viscosity	All models with VVT	2000+
P0011	A Camshaft Position Timing Over-Advanced	Engine	Medium	VVT solenoid stuck; timing chain stretch; ECM issues	Check timing; inspect VVT system	All models with VVT	2000+
P0012	A Camshaft Position Timing Over-Retarded	Engine	Medium	VVT solenoid malfunction; low oil pressure	Check VVT solenoid; verify oil pressure	All models with VVT	2000+
P0013	B Camshaft Position Actuator Circuit	Engine	Medium	Exhaust VVT solenoid failure; wiring issues	Check exhaust VVT solenoid and wiring	V6/V8 models	2005+
P0014	B Camshaft Position Timing Over-Advanced	Engine	Medium	Exhaust VVT timing issues; solenoid problems	Check exhaust VVT system timing	V6/V8 models	2005+
P0015	B Camshaft Position Timing Over-Retarded	Engine	Medium	Exhaust VVT solenoid stuck; oil flow issues	Inspect exhaust VVT solenoid	V6/V8 models	2005+
P0016	Crankshaft/Camshaft Correlation Bank 1 Sensor A	Engine	High	Timing chain stretch; VVT issues; sensor problems	Check timing chain; inspect VVT system	All models	2000+
P0017	Crankshaft/Camshaft Correlation Bank 1 Sensor B	Engine	High	Timing correlation error; sensor malfunction	Verify timing; check cam/crank sensors	All models	2000+
P0018	Crankshaft/Camshaft Correlation Bank 2 Sensor A	Engine	High	Bank 2 timing issues; sensor problems	Check Bank 2 timing; inspect sensors	V6/V8 models	2000+
P0019	Crankshaft/Camshaft Correlation Bank 2 Sensor B	Engine	High	Bank 2 timing correlation error	Verify Bank 2 timing system	V6/V8 models	2000+
P0020	A Camshaft Position Actuator Circuit Bank 2	Engine	Medium	Bank 2 VVT solenoid failure	Check Bank 2 VVT solenoid	V6/V8 models	2005+
P0021	A Camshaft Position Timing Over-Advanced Bank 2	Engine	Medium	Bank 2 VVT timing advanced	Check Bank 2 VVT timing	V6/V8 models	2005+
P0022	A Camshaft Position Timing Over-Retarded Bank 2	Engine	Medium	Bank 2 VVT timing retarded	Inspect Bank 2 VVT system	V6/V8 models	2005+
P0030	HO2S Heater Control Circuit Bank 1 Sensor 1	Emissions	Medium	O2 sensor heater failure; wiring issues	Check O2 sensor heater circuit	All models	1996+
P0031	HO2S Heater Control Circuit Low Bank 1 Sensor 1	Emissions	Medium	O2 sensor heater short to ground	Test O2 sensor heater resistance	All models	1996+
P0032	HO2S Heater Control Circuit High Bank 1 Sensor 1	Emissions	Medium	O2 sensor heater short to power	Check O2 sensor heater wiring	All models	1996+
P0036	HO2S Heater Control Circuit Bank 1 Sensor 2	Emissions	Medium	Downstream O2 sensor heater failure	Replace downstream O2 sensor	All models	1996+
P0037	HO2S Heater Control Circuit Low Bank 1 Sensor 2	Emissions	Medium	Downstream O2 heater short to ground	Check downstream O2 sensor wiring	All models	1996+
P0038	HO2S Heater Control Circuit High Bank 1 Sensor 2	Emissions	Medium	Downstream O2 heater short to power	Inspect downstream O2 sensor circuit	All models	1996+
P0050	HO2S Heater Control Circuit Bank 2 Sensor 1	Emissions	Medium	Bank 2 O2 sensor heater failure	Check Bank 2 O2 sensor heater	V6/V8 models	1996+
P0051	HO2S Heater Control Circuit Low Bank 2 Sensor 1	Emissions	Medium	Bank 2 O2 heater short to ground	Test Bank 2 O2 sensor heater	V6/V8 models	1996+
P0052	HO2S Heater Control Circuit High Bank 2 Sensor 1	Emissions	Medium	Bank 2 O2 heater short to power	Check Bank 2 O2 sensor wiring	V6/V8 models	1996+
P0056	HO2S Heater Control Circuit Bank 2 Sensor 2	Emissions	Medium	Bank 2 downstream O2 heater failure	Replace Bank 2 downstream O2 sensor	V6/V8 models	1996+
P0057	HO2S Heater Control Circuit Low Bank 2 Sensor 2	Emissions	Medium	Bank 2 downstream O2 heater short	Check Bank 2 downstream O2 wiring	V6/V8 models	1996+
P0058	HO2S Heater Control Circuit High Bank 2 Sensor 2	Emissions	Medium	Bank 2 downstream O2 heater short	Inspect Bank 2 downstream O2 circuit	V6/V8 models	1996+
P0100	Mass Air Flow Circuit Malfunction	Engine	High	Dirty MAF sensor; wiring issues; vacuum leaks	Clean or replace MAF sensor	All models	1996+
P0101	Mass Air Flow Circuit Range/Performance	Engine	High	Dirty MAF sensor; air filter clogged; intake leaks	Clean MAF; replace air filter	All models	1996+
P0102	Mass Air Flow Circuit Low Input	Engine	High	MAF sensor failure; wiring short to ground	Test MAF sensor and wiring	All models	1996+
P0103	Mass Air Flow Circuit High Input	Engine	High	MAF sensor failure; wiring short to power	Check MAF sensor operation	All models	1996+
P0110	Intake Air Temperature Circuit Malfunction	Engine	Medium	IAT sensor failure; wiring issues	Test IAT sensor resistance	All models	1996+
P0111	Intake Air Temperature Circuit Range/Performance	Engine	Medium	IAT sensor out of range; wiring problems	Check IAT sensor operation	All models	1996+
P0112	Intake Air Temperature Circuit Low Input	Engine	Medium	IAT sensor short to ground; sensor failure	Test IAT sensor and wiring	All models	1996+
P0113	Intake Air Temperature Circuit High Input	Engine	Medium	IAT sensor open circuit; wiring issues	Check IAT sensor continuity	All models	1996+
P0115	Engine Coolant Temperature Circuit Malfunction	Engine	High	ECT sensor failure; wiring problems	Test ECT sensor resistance	All models	1996+
P0116	Engine Coolant Temperature Circuit Range/Performance	Engine	Medium	ECT sensor out of range; thermostat issues	Check ECT sensor and thermostat	All models	1996+
P0117	Engine Coolant Temperature Circuit Low Input	Engine	High	ECT sensor short to ground; wiring fault	Test ECT sensor and wiring	All models	1996+
P0118	Engine Coolant Temperature Circuit High Input	Engine	High	ECT sensor open circuit; sensor failure	Check ECT sensor continuity	All models	1996+
P0120	Throttle Position Sensor Circuit Malfunction	Engine	High	TPS failure; wiring issues; throttle body problems	Test TPS operation and wiring	All models	1996+
P0121	Throttle Position Sensor Circuit Range/Performance	Engine	High	TPS out of range; throttle body issues	Check TPS calibration	All models	1996+
P0122	Throttle Position Sensor Circuit Low Input	Engine	High	TPS short to ground; sensor failure	Test TPS voltage and wiring	All models	1996+
P0123	Throttle Position Sensor Circuit High Input	Engine	High	TPS short to power; open circuit	Check TPS signal voltage	All models	1996+
P0125	Insufficient Coolant Temperature for Closed Loop	Engine	Medium	Thermostat stuck open; ECT sensor issues	Replace thermostat; check ECT sensor	All models	1996+
P0128	Coolant Thermostat Rationality	Engine	Medium	Thermostat stuck open; low coolant level	Replace thermostat; check coolant level	All models	2000+
P0130	O2 Sensor Circuit Malfunction Bank 1 Sensor 1	Emissions	Medium	O2 sensor failure; wiring issues; exhaust leaks	Test O2 sensor operation	All models	1996+
P0131	O2 Sensor Circuit Low Voltage Bank 1 Sensor 1	Emissions	Medium	O2 sensor lean bias; vacuum leaks; sensor failure	Check for vacuum leaks; test O2 sensor	All models	1996+
P0132	O2 Sensor Circuit High Voltage Bank 1 Sensor 1	Emissions	Medium	O2 sensor rich bias; fuel system issues	Check fuel pressure; test O2 sensor	All models	1996+
P0133	O2 Sensor Circuit Slow Response Bank 1 Sensor 1	Emissions	Medium	O2 sensor aging; contamination; exhaust leaks	Replace O2 sensor; check exhaust system	All models	1996+
P0134	O2 Sensor Circuit No Activity Bank 1 Sensor 1	Emissions	Medium	O2 sensor failure; wiring open circuit	Test O2 sensor and wiring	All models	1996+
P0135	O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1	Emissions	Medium	O2 sensor heater failure; fuse blown	Check O2 sensor heater circuit	All models	1996+
P0136	O2 Sensor Circuit Malfunction Bank 1 Sensor 2	Emissions	Medium	Downstream O2 sensor failure; wiring issues	Test downstream O2 sensor	All models	1996+
P0137	O2 Sensor Circuit Low Voltage Bank 1 Sensor 2	Emissions	Medium	Downstream O2 sensor low voltage	Check downstream O2 sensor operation	All models	1996+
P0138	O2 Sensor Circuit High Voltage Bank 1 Sensor 2	Emissions	Medium	Downstream O2 sensor high voltage	Test downstream O2 sensor	All models	1996+
P0139	O2 Sensor Circuit Slow Response Bank 1 Sensor 2	Emissions	Medium	Downstream O2 sensor slow response	Replace downstream O2 sensor	All models	1996+
P0140	O2 Sensor Circuit No Activity Bank 1 Sensor 2	Emissions	Medium	Downstream O2 sensor no signal	Check downstream O2 sensor wiring	All models	1996+
P0141	O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 2	Emissions	Medium	Downstream O2 heater failure	Test downstream O2 heater circuit	All models	1996+
P0150	O2 Sensor Circuit Malfunction Bank 2 Sensor 1	Emissions	Medium	Bank 2 O2 sensor failure	Test Bank 2 O2 sensor	V6/V8 models	1996+
P0151	O2 Sensor Circuit Low Voltage Bank 2 Sensor 1	Emissions	Medium	Bank 2 O2 sensor lean bias	Check Bank 2 O2 sensor operation	V6/V8 models	1996+
P0152	O2 Sensor Circuit High Voltage Bank 2 Sensor 1	Emissions	Medium	Bank 2 O2 sensor rich bias	Test Bank 2 O2 sensor	V6/V8 models	1996+
P0153	O2 Sensor Circuit Slow Response Bank 2 Sensor 1	Emissions	Medium	Bank 2 O2 sensor aging	Replace Bank 2 O2 sensor	V6/V8 models	1996+
P0154	O2 Sensor Circuit No Activity Bank 2 Sensor 1	Emissions	Medium	Bank 2 O2 sensor no signal	Check Bank 2 O2 sensor wiring	V6/V8 models	1996+
P0155	O2 Sensor Heater Circuit Malfunction Bank 2 Sensor 1	Emissions	Medium	Bank 2 O2 heater failure	Test Bank 2 O2 heater circuit	V6/V8 models	1996+
P0156	O2 Sensor Circuit Malfunction Bank 2 Sensor 2	Emissions	Medium	Bank 2 downstream O2 sensor failure	Test Bank 2 downstream O2 sensor	V6/V8 models	1996+
P0157	O2 Sensor Circuit Low Voltage Bank 2 Sensor 2	Emissions	Medium	Bank 2 downstream O2 low voltage	Check Bank 2 downstream O2 operation	V6/V8 models	1996+
P0158	O2 Sensor Circuit High Voltage Bank 2 Sensor 2	Emissions	Medium	Bank 2 downstream O2 high voltage	Test Bank 2 downstream O2 sensor	V6/V8 models	1996+
P0159	O2 Sensor Circuit Slow Response Bank 2 Sensor 2	Emissions	Medium	Bank 2 downstream O2 slow response	Replace Bank 2 downstream O2 sensor	V6/V8 models	1996+
P0160	O2 Sensor Circuit No Activity Bank 2 Sensor 2	Emissions	Medium	Bank 2 downstream O2 no signal	Check Bank 2 downstream O2 wiring	V6/V8 models	1996+
P0161	O2 Sensor Heater Circuit Malfunction Bank 2 Sensor 2	Emissions	Medium	Bank 2 downstream O2 heater failure	Test Bank 2 downstream O2 heater	V6/V8 models	1996+
P0171	System Too Lean Bank 1	Fuel	High	Vacuum leaks; dirty MAF; fuel filter; injectors	Check for vacuum leaks; clean MAF sensor	All models	1996+
P0172	System Too Rich Bank 1	Fuel	High	Fuel pressure high; dirty injectors; EVAP issues	Check fuel pressure; test injectors	All models	1996+
P0174	System Too Lean Bank 2	Fuel	High	Bank 2 vacuum leaks; MAF issues; fuel problems	Check Bank 2 for vacuum leaks	V6/V8 models	1996+
P0175	System Too Rich Bank 2	Fuel	High	Bank 2 fuel system rich condition	Check Bank 2 fuel system	V6/V8 models	1996+
P0180	Fuel Temperature Sensor A Circuit Malfunction	Fuel	Low	Fuel temp sensor failure; wiring issues	Test fuel temperature sensor	Some models	2000+
P0181	Fuel Temperature Sensor A Circuit Range/Performance	Fuel	Low	Fuel temp sensor out of range	Check fuel temperature sensor operation	Some models	2000+
P0182	Fuel Temperature Sensor A Circuit Low Input	Fuel	Low	Fuel temp sensor short to ground	Test fuel temp sensor wiring	Some models	2000+
P0183	Fuel Temperature Sensor A Circuit High Input	Fuel	Low	Fuel temp sensor open circuit	Check fuel temp sensor continuity	Some models	2000+
P0190	Fuel Rail Pressure Sensor Circuit Malfunction	Fuel	Medium	Fuel rail pressure sensor failure	Test fuel rail pressure sensor	GDI models	2006+
P0191	Fuel Rail Pressure Sensor Circuit Range/Performance	Fuel	Medium	Fuel rail pressure out of range	Check fuel rail pressure system	GDI models	2006+
P0192	Fuel Rail Pressure Sensor Circuit Low Input	Fuel	Medium	Fuel rail pressure sensor low signal	Test fuel rail pressure sensor	GDI models	2006+
P0193	Fuel Rail Pressure Sensor Circuit High Input	Fuel	Medium	Fuel rail pressure sensor high signal	Check fuel rail pressure sensor	GDI models	2006+
P0196	Engine Oil Temperature Sensor Range/Performance	Engine	Low	Oil temp sensor malfunction	Test oil temperature sensor	Some models	2005+
P0197	Engine Oil Temperature Sensor Low	Engine	Low	Oil temp sensor short to ground	Check oil temp sensor wiring	Some models	2005+
P0198	Engine Oil Temperature Sensor High	Engine	Low	Oil temp sensor open circuit	Test oil temp sensor continuity	Some models	2005+
P0200	Injector Circuit Malfunction	Fuel	High	Fuel injector wiring issues; ECM problems	Test injector circuits and resistance	All models	1996+
P0201	Injector Circuit Malfunction Cylinder 1	Fuel	High	Cylinder 1 injector failure; wiring issues	Test cylinder 1 injector	All models	1996+
P0202	Injector Circuit Malfunction Cylinder 2	Fuel	High	Cylinder 2 injector failure; wiring issues	Test cylinder 2 injector	All models	1996+
P0203	Injector Circuit Malfunction Cylinder 3	Fuel	High	Cylinder 3 injector failure; wiring issues	Test cylinder 3 injector	All models	1996+
P0204	Injector Circuit Malfunction Cylinder 4	Fuel	High	Cylinder 4 injector failure; wiring issues	Test cylinder 4 injector	All models	1996+
P0205	Injector Circuit Malfunction Cylinder 5	Fuel	High	Cylinder 5 injector failure; wiring issues	Test cylinder 5 injector	V6/V8 models	1996+
P0206	Injector Circuit Malfunction Cylinder 6	Fuel	High	Cylinder 6 injector failure; wiring issues	Test cylinder 6 injector	V6/V8 models	1996+
P0207	Injector Circuit Malfunction Cylinder 7	Fuel	High	Cylinder 7 injector failure; wiring issues	Test cylinder 7 injector	V8 models	1996+
P0208	Injector Circuit Malfunction Cylinder 8	Fuel	High	Cylinder 8 injector failure; wiring issues	Test cylinder 8 injector	V8 models	1996+
P0220	Throttle/Pedal Position Sensor Switch B Circuit Malfunction	Engine	High	Accelerator pedal sensor failure; wiring issues	Test accelerator pedal position sensor	Drive-by-wire models	2002+
P0221	Throttle/Pedal Position Sensor Switch B Circuit Range/Performance	Engine	High	Accelerator pedal sensor out of range	Check accelerator pedal sensor operation	Drive-by-wire models	2002+
P0222	Throttle/Pedal Position Sensor Switch B Circuit Low Input	Engine	High	Accelerator pedal sensor low signal	Test accelerator pedal sensor wiring	Drive-by-wire models	2002+
P0223	Throttle/Pedal Position Sensor Switch B Circuit High Input	Engine	High	Accelerator pedal sensor high signal	Check accelerator pedal sensor	Drive-by-wire models	2002+
P0230	Fuel Pump Primary Circuit Malfunction	Fuel	High	Fuel pump relay failure; wiring issues; fuse blown	Check fuel pump relay and fuse	All models	1996+
P0231	Fuel Pump Secondary Circuit Low	Fuel	High	Fuel pump circuit low voltage	Test fuel pump circuit voltage	All models	1996+
P0232	Fuel Pump Secondary Circuit High	Fuel	High	Fuel pump circuit high voltage	Check fuel pump circuit wiring	All models	1996+
P0261	Cylinder 1 Injector Circuit Low	Fuel	High	Cylinder 1 injector short to ground	Test cylinder 1 injector wiring	All models	1996+
P0262	Cylinder 1 Injector Circuit High	Fuel	High	Cylinder 1 injector short to power	Check cylinder 1 injector circuit	All models	1996+
P0264	Cylinder 2 Injector Circuit Low	Fuel	High	Cylinder 2 injector short to ground	Test cylinder 2 injector wiring	All models	1996+
P0265	Cylinder 2 Injector Circuit High	Fuel	High	Cylinder 2 injector short to power	Check cylinder 2 injector circuit	All models	1996+
P0267	Cylinder 3 Injector Circuit Low	Fuel	High	Cylinder 3 injector short to ground	Test cylinder 3 injector wiring	All models	1996+
P0268	Cylinder 3 Injector Circuit High	Fuel	High	Cylinder 3 injector short to power	Check cylinder 3 injector circuit	All models	1996+
P0270	Cylinder 4 Injector Circuit Low	Fuel	High	Cylinder 4 injector short to ground	Test cylinder 4 injector wiring	All models	1996+
P0271	Cylinder 4 Injector Circuit High	Fuel	High	Cylinder 4 injector short to power	Check cylinder 4 injector circuit	All models	1996+
P0273	Cylinder 5 Injector Circuit Low	Fuel	High	Cylinder 5 injector short to ground	Test cylinder 5 injector wiring	V6/V8 models	1996+
P0274	Cylinder 5 Injector Circuit High	Fuel	High	Cylinder 5 injector short to power	Check cylinder 5 injector circuit	V6/V8 models	1996+
P0276	Cylinder 6 Injector Circuit Low	Fuel	High	Cylinder 6 injector short to ground	Test cylinder 6 injector wiring	V6/V8 models	1996+
P0277	Cylinder 6 Injector Circuit High	Fuel	High	Cylinder 6 injector short to power	Check cylinder 6 injector circuit	V6/V8 models	1996+
P0279	Cylinder 7 Injector Circuit Low	Fuel	High	Cylinder 7 injector short to ground	Test cylinder 7 injector wiring	V8 models	1996+
P0280	Cylinder 7 Injector Circuit High	Fuel	High	Cylinder 7 injector short to power	Check cylinder 7 injector circuit	V8 models	1996+
P0282	Cylinder 8 Injector Circuit Low	Fuel	High	Cylinder 8 injector short to ground	Test cylinder 8 injector wiring	V8 models	1996+
P0283	Cylinder 8 Injector Circuit High	Fuel	High	Cylinder 8 injector short to power	Check cylinder 8 injector circuit	V8 models	1996+
P0300	Random/Multiple Cylinder Misfire Detected	Engine	High	Worn spark plugs; ignition coils; fuel injectors; vacuum leaks	Replace spark plugs; check coils and injectors	All models	1996+
P0301	Cylinder 1 Misfire Detected	Engine	High	Cylinder 1 spark plug; ignition coil; injector; compression	Check cylinder 1 spark plug and coil	All models	1996+
P0302	Cylinder 2 Misfire Detected	Engine	High	Cylinder 2 spark plug; ignition coil; injector; compression	Check cylinder 2 spark plug and coil	All models	1996+
P0303	Cylinder 3 Misfire Detected	Engine	High	Cylinder 3 spark plug; ignition coil; injector; compression	Check cylinder 3 spark plug and coil	All models	1996+
P0304	Cylinder 4 Misfire Detected	Engine	High	Cylinder 4 spark plug; ignition coil; injector; compression	Check cylinder 4 spark plug and coil	All models	1996+
P0305	Cylinder 5 Misfire Detected	Engine	High	Cylinder 5 spark plug; ignition coil; injector; compression	Check cylinder 5 spark plug and coil	V6/V8 models	1996+
P0306	Cylinder 6 Misfire Detected	Engine	High	Cylinder 6 spark plug; ignition coil; injector; compression	Check cylinder 6 spark plug and coil	V6/V8 models	1996+
P0307	Cylinder 7 Misfire Detected	Engine	High	Cylinder 7 spark plug; ignition coil; injector; compression	Check cylinder 7 spark plug and coil	V8 models	1996+
P0308	Cylinder 8 Misfire Detected	Engine	High	Cylinder 8 spark plug; ignition coil; injector; compression	Check cylinder 8 spark plug and coil	V8 models	1996+
P0325	Knock Sensor 1 Circuit Malfunction Bank 1	Engine	Medium	Knock sensor failure; wiring issues; engine knock	Test knock sensor and wiring	All models	1996+
P0326	Knock Sensor 1 Circuit Range/Performance Bank 1	Engine	Medium	Knock sensor out of range; false knock detection	Check knock sensor operation	All models	1996+
P0327	Knock Sensor 1 Circuit Low Input Bank 1	Engine	Medium	Knock sensor short to ground; sensor failure	Test knock sensor resistance	All models	1996+
P0328	Knock Sensor 1 Circuit High Input Bank 1	Engine	Medium	Knock sensor open circuit; wiring issues	Check knock sensor continuity	All models	1996+
P0330	Knock Sensor 2 Circuit Malfunction Bank 2	Engine	Medium	Bank 2 knock sensor failure	Test Bank 2 knock sensor	V6/V8 models	1996+
P0331	Knock Sensor 2 Circuit Range/Performance Bank 2	Engine	Medium	Bank 2 knock sensor out of range	Check Bank 2 knock sensor operation	V6/V8 models	1996+
P0332	Knock Sensor 2 Circuit Low Input Bank 2	Engine	Medium	Bank 2 knock sensor short to ground	Test Bank 2 knock sensor resistance	V6/V8 models	1996+
P0333	Knock Sensor 2 Circuit High Input Bank 2	Engine	Medium	Bank 2 knock sensor open circuit	Check Bank 2 knock sensor continuity	V6/V8 models	1996+
P0335	Crankshaft Position Sensor A Circuit Malfunction	Engine	Critical	Crankshaft position sensor failure; wiring issues	Test crankshaft position sensor	All models	1996+
P0336	Crankshaft Position Sensor A Circuit Range/Performance	Engine	Critical	Crankshaft sensor signal erratic; timing issues	Check crankshaft sensor and timing	All models	1996+
P0337	Crankshaft Position Sensor A Circuit Low Input	Engine	Critical	Crankshaft sensor short to ground; sensor failure	Test crankshaft sensor wiring	All models	1996+
P0338	Crankshaft Position Sensor A Circuit High Input	Engine	Critical	Crankshaft sensor open circuit; wiring issues	Check crankshaft sensor continuity	All models	1996+
P0339	Crankshaft Position Sensor A Circuit Intermittent	Engine	Critical	Crankshaft sensor intermittent signal; loose connection	Check crankshaft sensor connections	All models	1996+
P0340	Camshaft Position Sensor Circuit Malfunction	Engine	High	Camshaft position sensor failure; wiring issues	Test camshaft position sensor	All models	1996+
P0341	Camshaft Position Sensor Circuit Range/Performance	Engine	High	Camshaft sensor signal erratic; timing issues	Check camshaft sensor and timing	All models	1996+
P0342	Camshaft Position Sensor Circuit Low Input	Engine	High	Camshaft sensor short to ground; sensor failure	Test camshaft sensor wiring	All models	1996+
P0343	Camshaft Position Sensor Circuit High Input	Engine	High	Camshaft sensor open circuit; wiring issues	Check camshaft sensor continuity	All models	1996+
P0344	Camshaft Position Sensor Circuit Intermittent	Engine	High	Camshaft sensor intermittent signal; loose connection	Check camshaft sensor connections	All models	1996+
P0345	Camshaft Position Sensor A Circuit Bank 2	Engine	High	Bank 2 camshaft sensor failure	Test Bank 2 camshaft sensor	V6/V8 models	1996+
P0346	Camshaft Position Sensor A Circuit Range/Performance Bank 2	Engine	High	Bank 2 camshaft sensor signal erratic	Check Bank 2 camshaft sensor	V6/V8 models	1996+
P0347	Camshaft Position Sensor A Circuit Low Bank 2	Engine	High	Bank 2 camshaft sensor short to ground	Test Bank 2 camshaft sensor wiring	V6/V8 models	1996+
P0348	Camshaft Position Sensor A Circuit High Bank 2	Engine	High	Bank 2 camshaft sensor open circuit	Check Bank 2 camshaft sensor continuity	V6/V8 models	1996+
P0349	Camshaft Position Sensor A Circuit Intermittent Bank 2	Engine	High	Bank 2 camshaft sensor intermittent signal	Check Bank 2 camshaft sensor connections	V6/V8 models	1996+
P0350	Ignition Coil Primary/Secondary Circuit Malfunction	Ignition	High	Ignition coil failure; wiring issues; ECM problems	Test ignition coils and circuits	All models	1996+
P0351	Ignition Coil A Primary/Secondary Circuit Malfunction	Ignition	High	Ignition coil A failure; cylinder 1 coil issues	Test cylinder 1 ignition coil	All models	1996+
P0352	Ignition Coil B Primary/Secondary Circuit Malfunction	Ignition	High	Ignition coil B failure; cylinder 2 coil issues	Test cylinder 2 ignition coil	All models	1996+
P0353	Ignition Coil C Primary/Secondary Circuit Malfunction	Ignition	High	Ignition coil C failure; cylinder 3 coil issues	Test cylinder 3 ignition coil	All models	1996+
P0354	Ignition Coil D Primary/Secondary Circuit Malfunction	Ignition	High	Ignition coil D failure; cylinder 4 coil issues	Test cylinder 4 ignition coil	All models	1996+
P0355	Ignition Coil E Primary/Secondary Circuit Malfunction	Ignition	High	Ignition coil E failure; cylinder 5 coil issues	Test cylinder 5 ignition coil	V6/V8 models	1996+
P0356	Ignition Coil F Primary/Secondary Circuit Malfunction	Ignition	High	Ignition coil F failure; cylinder 6 coil issues	Test cylinder 6 ignition coil	V6/V8 models	1996+
P0357	Ignition Coil G Primary/Secondary Circuit Malfunction	Ignition	High	Ignition coil G failure; cylinder 7 coil issues	Test cylinder 7 ignition coil	V8 models	1996+
P0358	Ignition Coil H Primary/Secondary Circuit Malfunction	Ignition	High	Ignition coil H failure; cylinder 8 coil issues	Test cylinder 8 ignition coil	V8 models	1996+
P0365	Camshaft Position Sensor B Circuit Bank 1	Engine	High	Exhaust camshaft sensor failure Bank 1	Test exhaust camshaft sensor Bank 1	DOHC models	2000+
P0366	Camshaft Position Sensor B Circuit Range/Performance Bank 1	Engine	High	Exhaust camshaft sensor signal erratic Bank 1	Check exhaust camshaft sensor Bank 1	DOHC models	2000+
P0367	Camshaft Position Sensor B Circuit Low Bank 1	Engine	High	Exhaust camshaft sensor short to ground Bank 1	Test exhaust camshaft sensor wiring Bank 1	DOHC models	2000+
P0368	Camshaft Position Sensor B Circuit High Bank 1	Engine	High	Exhaust camshaft sensor open circuit Bank 1	Check exhaust camshaft sensor continuity Bank 1	DOHC models	2000+
P0369	Camshaft Position Sensor B Circuit Intermittent Bank 1	Engine	High	Exhaust camshaft sensor intermittent Bank 1	Check exhaust camshaft sensor connections Bank 1	DOHC models	2000+
P0390	Camshaft Position Sensor B Circuit Bank 2	Engine	High	Exhaust camshaft sensor failure Bank 2	Test exhaust camshaft sensor Bank 2	DOHC V6/V8 models	2000+
P0391	Camshaft Position Sensor B Circuit Range/Performance Bank 2	Engine	High	Exhaust camshaft sensor signal erratic Bank 2	Check exhaust camshaft sensor Bank 2	DOHC V6/V8 models	2000+
P0392	Camshaft Position Sensor B Circuit Low Bank 2	Engine	High	Exhaust camshaft sensor short to ground Bank 2	Test exhaust camshaft sensor wiring Bank 2	DOHC V6/V8 models	2000+
P0393	Camshaft Position Sensor B Circuit High Bank 2	Engine	High	Exhaust camshaft sensor open circuit Bank 2	Check exhaust camshaft sensor continuity Bank 2	DOHC V6/V8 models	2000+
P0394	Camshaft Position Sensor B Circuit Intermittent Bank 2	Engine	High	Exhaust camshaft sensor intermittent Bank 2	Check exhaust camshaft sensor connections Bank 2	DOHC V6/V8 models	2000+
P0401	Exhaust Gas Recirculation Flow Insufficient Detected	Emissions	Medium	EGR valve stuck closed; carbon buildup; vacuum issues	Clean EGR valve; check vacuum lines	Most models	1996+
P0402	Exhaust Gas Recirculation Flow Excessive Detected	Emissions	Medium	EGR valve stuck open; vacuum issues	Test EGR valve operation	Most models	1996+
P0403	Exhaust Gas Recirculation Circuit Malfunction	Emissions	Medium	EGR solenoid failure; wiring issues	Test EGR solenoid and wiring	Most models	1996+
P0404	Exhaust Gas Recirculation Circuit Range/Performance	Emissions	Medium	EGR valve position sensor issues	Check EGR valve position sensor	Some models	2000+
P0405	Exhaust Gas Recirculation Sensor A Circuit Low	Emissions	Medium	EGR position sensor short to ground	Test EGR position sensor wiring	Some models	2000+
P0406	Exhaust Gas Recirculation Sensor A Circuit High	Emissions	Medium	EGR position sensor open circuit	Check EGR position sensor continuity	Some models	2000+
P0410	Secondary Air Injection System Malfunction	Emissions	Medium	Air injection pump failure; check valve issues	Test air injection system	Some models	1996-2005
P0411	Secondary Air Injection System Incorrect Flow Detected	Emissions	Medium	Air injection flow problems; blocked passages	Check air injection flow	Some models	1996-2005
P0412	Secondary Air Injection System Switching Valve A Circuit Malfunction	Emissions	Medium	Air injection switching valve failure	Test air injection switching valve	Some models	1996-2005
P0413	Secondary Air Injection System Switching Valve A Circuit Open	Emissions	Medium	Air injection valve circuit open	Check air injection valve wiring	Some models	1996-2005
P0414	Secondary Air Injection System Switching Valve A Circuit Shorted	Emissions	Medium	Air injection valve circuit shorted	Test air injection valve circuit	Some models	1996-2005
P0420	Catalyst System Efficiency Below Threshold Bank 1	Emissions	Medium	Catalytic converter failure; O2 sensor issues	Test O2 sensors; may need cat replacement	All models	1996+
P0421	Warm Up Catalyst Efficiency Below Threshold Bank 1	Emissions	Medium	Warm-up catalyst failure	Test warm-up catalyst efficiency	Some models	1996+
P0430	Catalyst System Efficiency Below Threshold Bank 2	Emissions	Medium	Bank 2 catalytic converter failure	Test Bank 2 catalyst efficiency	V6/V8 models	1996+
P0431	Warm Up Catalyst Efficiency Below Threshold Bank 2	Emissions	Medium	Bank 2 warm-up catalyst failure	Test Bank 2 warm-up catalyst	V6/V8 models	1996+
P0440	Evaporative Emission Control System Malfunction	Emissions	Low	EVAP system leak; gas cap loose; purge valve issues	Check gas cap; test EVAP system	All models	1996+
P0441	Evaporative Emission Control System Incorrect Purge Flow	Emissions	Low	EVAP purge valve malfunction; vacuum issues	Test EVAP purge valve operation	All models	1996+
P0442	Evaporative Emission Control System Leak Detected Small Leak	Emissions	Low	Small EVAP leak; gas cap; lines; canister	Perform EVAP smoke test	All models	1996+
P0443	Evaporative Emission Control System Purge Control Valve Circuit Malfunction	Emissions	Low	EVAP purge valve circuit issues	Test EVAP purge valve circuit	All models	1996+
P0444	Evaporative Emission Control System Purge Control Valve Circuit Open	Emissions	Low	EVAP purge valve circuit open	Check EVAP purge valve wiring	All models	1996+
P0445	Evaporative Emission Control System Purge Control Valve Circuit Shorted	Emissions	Low	EVAP purge valve circuit shorted	Test EVAP purge valve circuit	All models	1996+
P0446	Evaporative Emission Control System Vent Control Circuit Malfunction	Emissions	Low	EVAP vent valve circuit issues	Test EVAP vent valve circuit	All models	1996+
P0447	Evaporative Emission Control System Vent Control Circuit Open	Emissions	Low	EVAP vent valve circuit open	Check EVAP vent valve wiring	All models	1996+
P0448	Evaporative Emission Control System Vent Control Circuit Shorted	Emissions	Low	EVAP vent valve circuit shorted	Test EVAP vent valve circuit	All models	1996+
P0449	Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction	Emissions	Low	EVAP vent solenoid failure	Test EVAP vent solenoid	All models	1996+
P0450	Evaporative Emission Control System Pressure Sensor Malfunction	Emissions	Low	EVAP pressure sensor failure	Test EVAP pressure sensor	Some models	2000+
P0451	Evaporative Emission Control System Pressure Sensor Range/Performance	Emissions	Low	EVAP pressure sensor out of range	Check EVAP pressure sensor operation	Some models	2000+
P0452	Evaporative Emission Control System Pressure Sensor Low Input	Emissions	Low	EVAP pressure sensor low signal	Test EVAP pressure sensor wiring	Some models	2000+
P0453	Evaporative Emission Control System Pressure Sensor High Input	Emissions	Low	EVAP pressure sensor high signal	Check EVAP pressure sensor	Some models	2000+
P0454	Evaporative Emission Control System Pressure Sensor Intermittent	Emissions	Low	EVAP pressure sensor intermittent	Check EVAP pressure sensor connections	Some models	2000+
P0455	Evaporative Emission Control System Leak Detected Gross Leak	Emissions	Low	Large EVAP leak; missing gas cap; damaged lines	Check for large EVAP leaks	All models	1996+
P0456	Evaporative Emission Control System Leak Detected Very Small Leak	Emissions	Low	Very small EVAP leak detection	Perform detailed EVAP leak test	All models	2000+
P0457	Evaporative Emission Control System Leak Detected Fuel Cap Loose/Off	Emissions	Low	Gas cap loose or missing	Check and tighten gas cap	All models	2000+
P0458	Evaporative Emission Control System Purge Control Valve Circuit Low	Emissions	Low	EVAP purge valve circuit low	Test EVAP purge valve circuit	All models	2000+
P0459	Evaporative Emission Control System Purge Control Valve Circuit High	Emissions	Low	EVAP purge valve circuit high	Check EVAP purge valve circuit	All models	2000+
P0460	Fuel Level Sensor Circuit Malfunction	Fuel	Low	Fuel level sender failure; wiring issues	Test fuel level sender	All models	1996+
P0461	Fuel Level Sensor Circuit Range/Performance	Fuel	Low	Fuel level sender out of range	Check fuel level sender operation	All models	1996+
P0462	Fuel Level Sensor Circuit Low Input	Fuel	Low	Fuel level sender short to ground	Test fuel level sender wiring	All models	1996+
P0463	Fuel Level Sensor Circuit High Input	Fuel	Low	Fuel level sender open circuit	Check fuel level sender continuity	All models	1996+
P0464	Fuel Level Sensor Circuit Intermittent	Fuel	Low	Fuel level sender intermittent signal	Check fuel level sender connections	All models	1996+
P0500	Vehicle Speed Sensor Malfunction	Transmission	Medium	Vehicle speed sensor failure; wiring issues	Test vehicle speed sensor	All models	1996+
P0501	Vehicle Speed Sensor Range/Performance	Transmission	Medium	Vehicle speed sensor out of range	Check vehicle speed sensor operation	All models	1996+
P0502	Vehicle Speed Sensor Circuit Low Input	Transmission	Medium	Vehicle speed sensor low signal	Test vehicle speed sensor wiring	All models	1996+
P0503	Vehicle Speed Sensor Intermittent/Erratic/High	Transmission	Medium	Vehicle speed sensor erratic signal	Check vehicle speed sensor	All models	1996+
P0505	Idle Air Control System Malfunction	Engine	Medium	IAC valve failure; carbon buildup; vacuum leaks	Clean IAC valve; check for vacuum leaks	Older models	1996-2005
P0506	Idle Air Control System RPM Lower Than Expected	Engine	Medium	IAC valve restricted; vacuum leaks; throttle issues	Clean IAC valve; check throttle body	Older models	1996-2005
P0507	Idle Air Control System RPM Higher Than Expected	Engine	Medium	IAC valve stuck open; vacuum leaks; throttle issues	Check IAC valve; inspect for vacuum leaks	Older models	1996-2005
P0510	Closed Throttle Position Switch Malfunction	Engine	Medium	Closed throttle switch failure; adjustment issues	Test closed throttle position switch	Older models	1996-2005
P0511	Idle Air Control Circuit Malfunction	Engine	Medium	IAC circuit issues; wiring problems	Test IAC circuit and wiring	Older models	1996-2005
P0550	Power Steering Pressure Sensor Circuit Malfunction	Steering	Low	Power steering pressure sensor failure	Test power steering pressure sensor	Models with hydraulic PS	1996-2010
P0551	Power Steering Pressure Sensor Circuit Range/Performance	Steering	Low	Power steering pressure sensor out of range	Check power steering pressure sensor	Models with hydraulic PS	1996-2010
P0552	Power Steering Pressure Sensor Circuit Low Input	Steering	Low	Power steering pressure sensor low signal	Test power steering pressure sensor wiring	Models with hydraulic PS	1996-2010
P0553	Power Steering Pressure Sensor Circuit High Input	Steering	Low	Power steering pressure sensor high signal	Check power steering pressure sensor	Models with hydraulic PS	1996-2010
P0560	System Voltage Malfunction	Electrical	Medium	Charging system issues; battery problems; alternator	Test charging system and battery	All models	1996+
P0561	System Voltage Unstable	Electrical	Medium	Voltage fluctuation; alternator issues; connections	Check alternator and connections	All models	1996+
P0562	System Voltage Low	Electrical	Medium	Low system voltage; alternator failure; battery	Test alternator output and battery	All models	1996+
P0563	System Voltage High	Electrical	Medium	High system voltage; alternator overcharging	Check alternator regulation	All models	1996+
P0571	Cruise Control/Brake Switch A Circuit Malfunction	Body	Low	Brake light switch failure; cruise control issues	Test brake light switch	All models	1996+
P0572	Cruise Control/Brake Switch A Circuit Low	Body	Low	Brake switch circuit low	Check brake switch wiring	All models	1996+
P0573	Cruise Control/Brake Switch A Circuit High	Body	Low	Brake switch circuit high	Test brake switch circuit	All models	1996+
P0601	Internal Control Module Memory Checksum Error	ECM	High	ECM internal memory corruption	Reprogram or replace ECM	All models	1996+
P0602	Control Module Programming Error	ECM	High	ECM programming error or corruption	Reprogram ECM with latest software	All models	1996+
P0603	Internal Control Module Keep Alive Memory Error	ECM	High	ECM keep alive memory failure	Replace ECM	All models	1996+
P0604	Internal Control Module Random Access Memory Error	ECM	High	ECM RAM failure	Replace ECM	All models	1996+
P0605	Internal Control Module Read Only Memory Error	ECM	High	ECM ROM failure	Replace ECM	All models	1996+
P0606	PCM Processor Fault	ECM	Critical	ECM processor failure	Replace ECM	All models	1996+
P0607	Control Module Performance	ECM	High	ECM performance issues	Test and reprogram ECM	All models	2000+
P0610	Control Module Vehicle Options Error	ECM	Medium	ECM vehicle option configuration error	Reprogram ECM with correct options	All models	2000+
P0627	Fuel Pump A Control Circuit Open	Fuel	High	Fuel pump relay circuit open	Check fuel pump relay circuit	All models	2000+
P0628	Fuel Pump A Control Circuit Low	Fuel	High	Fuel pump relay circuit low	Test fuel pump relay wiring	All models	2000+
P0629	Fuel Pump A Control Circuit High	Fuel	High	Fuel pump relay circuit high	Check fuel pump relay circuit	All models	2000+
P0630	VIN Not Programmed or Mismatch ECM/PCM	ECM	Medium	VIN programming issue in ECM	Program VIN in ECM	All models	2000+
P0631	Tire Pressure Monitor Control Module Performance	TPMS	Low	TPMS control module malfunction	Test TPMS control module	Models with TPMS	2007+
P0632	Odometer Not Programmed ECM/PCM	ECM	Low	Odometer not programmed in ECM	Program odometer in ECM	All models	2000+
P0633	Immobilizer Key Not Programmed ECM/PCM	Security	Medium	Immobilizer key not programmed	Program immobilizer keys	Models with immobilizer	2000+
P0634	PCM/ECM/TCM Internal Temperature Too High	ECM	High	ECM overheating; cooling issues	Check ECM cooling and location	All models	2000+
P0635	Power Steering Control Circuit	Steering	Medium	Power steering control circuit malfunction	Test power steering control system	Models with EPS	2010+
P0636	Power Steering Control Circuit Low	Steering	Medium	Power steering control circuit low	Check power steering control wiring	Models with EPS	2010+
P0637	Power Steering Control Circuit High	Steering	Medium	Power steering control circuit high	Test power steering control circuit	Models with EPS	2010+
P0638	Throttle Actuator Control Range/Performance Bank 1	Engine	High	Electronic throttle actuator malfunction	Test electronic throttle actuator	Drive-by-wire models	2002+
P0639	Throttle Actuator Control Range/Performance Bank 2	Engine	High	Bank 2 electronic throttle actuator malfunction	Test Bank 2 electronic throttle actuator	Some V6/V8 models	2005+
P0640	Intake Air Heater Control Circuit	Engine	Low	Intake air heater circuit malfunction	Test intake air heater circuit	Diesel models	2000+
P0641	Sensor Reference Voltage A Circuit Open	ECM	High	5V reference circuit open; multiple sensor issues	Check 5V reference circuit	All models	2000+
P0642	Sensor Reference Voltage A Circuit Low	ECM	High	5V reference circuit low; ECM issues	Test 5V reference voltage	All models	2000+
P0643	Sensor Reference Voltage A Circuit High	ECM	High	5V reference circuit high; short to power	Check 5V reference circuit	All models	2000+
P0644	Driver Display Serial Communication Circuit	Body	Low	Instrument cluster communication error	Check cluster communication	All models	2000+
P0645	A/C Clutch Relay Control Circuit	HVAC	Low	A/C clutch relay circuit malfunction	Test A/C clutch relay circuit	All models	1996+
P0646	A/C Clutch Relay Control Circuit Low	HVAC	Low	A/C clutch relay circuit low	Check A/C clutch relay wiring	All models	1996+
P0647	A/C Clutch Relay Control Circuit High	HVAC	Low	A/C clutch relay circuit high	Test A/C clutch relay circuit	All models	1996+
P0648	Immobilizer Lamp Control Circuit	Security	Low	Immobilizer indicator lamp circuit	Check immobilizer lamp circuit	Models with immobilizer	2000+
P0649	Speed Control Lamp Control Circuit	Body	Low	Cruise control indicator lamp circuit	Test cruise control lamp circuit	All models	1996+
P0650	Malfunction Indicator Lamp Control Circuit	Body	Low	Check engine light circuit malfunction	Check MIL circuit	All models	1996+
P0651	Sensor Reference Voltage B Circuit Open	ECM	High	Second 5V reference circuit open	Check second 5V reference circuit	All models	2005+
P0652	Sensor Reference Voltage B Circuit Low	ECM	High	Second 5V reference circuit low	Test second 5V reference voltage	All models	2005+
P0653	Sensor Reference Voltage B Circuit High	ECM	High	Second 5V reference circuit high	Check second 5V reference circuit	All models	2005+
P0654	Engine RPM Output Circuit	ECM	Low	Tachometer output circuit malfunction	Test tachometer output circuit	All models	2000+
P0655	Engine Hot Lamp Output Control Circuit	Body	Low	Engine hot warning lamp circuit	Check engine hot lamp circuit	All models	2000+
P0656	Fuel Level Output Circuit	Body	Low	Fuel gauge output circuit malfunction	Test fuel gauge output circuit	All models	2000+
P0657	Actuator Supply Voltage A Circuit Open	ECM	High	Actuator power supply circuit open	Check actuator power supply	All models	2005+
P0658	Actuator Supply Voltage A Circuit Low	ECM	High	Actuator power supply circuit low	Test actuator power supply voltage	All models	2005+
P0659	Actuator Supply Voltage A Circuit High	ECM	High	Actuator power supply circuit high	Check actuator power supply circuit	All models	2005+
P0660	Intake Manifold Tuning Valve Control Circuit Open Bank 1	Engine	Medium	IMTV control circuit open	Check IMTV control circuit	V6 models with IMTV	2005+
P0661	Intake Manifold Tuning Valve Control Circuit Low Bank 1	Engine	Medium	IMTV control circuit low	Test IMTV control wiring	V6 models with IMTV	2005+
P0662	Intake Manifold Tuning Valve Control Circuit High Bank 1	Engine	Medium	IMTV control circuit high	Check IMTV control circuit	V6 models with IMTV	2005+
P0663	Intake Manifold Tuning Valve Control Circuit Open Bank 2	Engine	Medium	Bank 2 IMTV control circuit open	Check Bank 2 IMTV control circuit	V6 models with IMTV	2005+
P0664	Intake Manifold Tuning Valve Control Circuit Low Bank 2	Engine	Medium	Bank 2 IMTV control circuit low	Test Bank 2 IMTV control wiring	V6 models with IMTV	2005+
P0665	Intake Manifold Tuning Valve Control Circuit High Bank 2	Engine	Medium	Bank 2 IMTV control circuit high	Check Bank 2 IMTV control circuit	V6 models with IMTV	2005+
P0666	PCM/ECM/TCM Internal Temperature Sensor Circuit	ECM	Medium	ECM temperature sensor malfunction	Test ECM temperature sensor	All models	2005+
P0667	PCM/ECM/TCM Internal Temperature Sensor Range/Performance	ECM	Medium	ECM temperature sensor out of range	Check ECM temperature sensor operation	All models	2005+
P0668	PCM/ECM/TCM Internal Temperature Sensor Circuit Low	ECM	Medium	ECM temperature sensor low signal	Test ECM temperature sensor wiring	All models	2005+
P0669	PCM/ECM/TCM Internal Temperature Sensor Circuit High	ECM	Medium	ECM temperature sensor high signal	Check ECM temperature sensor	All models	2005+
P0670	Glow Plug Module Control Circuit	Engine	Medium	Glow plug control module malfunction	Test glow plug control module	Diesel models	2000+
P0671	Cylinder 1 Glow Plug Circuit	Engine	Medium	Cylinder 1 glow plug circuit malfunction	Test cylinder 1 glow plug	Diesel models	2000+
P0672	Cylinder 2 Glow Plug Circuit	Engine	Medium	Cylinder 2 glow plug circuit malfunction	Test cylinder 2 glow plug	Diesel models	2000+
P0673	Cylinder 3 Glow Plug Circuit	Engine	Medium	Cylinder 3 glow plug circuit malfunction	Test cylinder 3 glow plug	Diesel models	2000+
P0674	Cylinder 4 Glow Plug Circuit	Engine	Medium	Cylinder 4 glow plug circuit malfunction	Test cylinder 4 glow plug	Diesel models	2000+
P0700	Transmission Control System Malfunction	Transmission	High	TCM communication error; transmission issues	Scan TCM for additional codes	Automatic models	1996+
P0701	Transmission Control System Range/Performance	Transmission	High	TCM performance issues	Test TCM operation	Automatic models	1996+
P0702	Transmission Control System Electrical	Transmission	High	TCM electrical malfunction	Check TCM electrical connections	Automatic models	1996+
P0703	Torque Converter/Brake Switch B Circuit Malfunction	Transmission	Medium	Brake switch circuit malfunction	Test brake switch operation	Automatic models	1996+
P0704	Clutch Switch Input Circuit Malfunction	Transmission	Medium	Clutch switch circuit malfunction	Test clutch switch	Manual models	1996+
P0705	Transmission Range Sensor Circuit Malfunction PRNDL Input	Transmission	High	Transmission range sensor failure	Test transmission range sensor	Automatic models	1996+
P0706	Transmission Range Sensor Circuit Range/Performance	Transmission	High	Transmission range sensor out of range	Check transmission range sensor operation	Automatic models	1996+
P0707	Transmission Range Sensor Circuit Low Input	Transmission	High	Transmission range sensor low signal	Test transmission range sensor wiring	Automatic models	1996+
P0708	Transmission Range Sensor Circuit High Input	Transmission	High	Transmission range sensor high signal	Check transmission range sensor	Automatic models	1996+
P0709	Transmission Range Sensor Circuit Intermittent	Transmission	High	Transmission range sensor intermittent	Check transmission range sensor connections	Automatic models	1996+
P0710	Transmission Fluid Temperature Sensor Circuit Malfunction	Transmission	Medium	ATF temperature sensor failure	Test ATF temperature sensor	Automatic models	1996+
P0711	Transmission Fluid Temperature Sensor Circuit Range/Performance	Transmission	Medium	ATF temperature sensor out of range	Check ATF temperature sensor operation	Automatic models	1996+
P0712	Transmission Fluid Temperature Sensor Circuit Low Input	Transmission	Medium	ATF temperature sensor low signal	Test ATF temperature sensor wiring	Automatic models	1996+
P0713	Transmission Fluid Temperature Sensor Circuit High Input	Transmission	Medium	ATF temperature sensor high signal	Check ATF temperature sensor	Automatic models	1996+
P0714	Transmission Fluid Temperature Sensor Circuit Intermittent	Transmission	Medium	ATF temperature sensor intermittent	Check ATF temperature sensor connections	Automatic models	1996+
P0715	Input/Turbine Speed Sensor Circuit Malfunction	Transmission	High	Input speed sensor failure	Test input speed sensor	Automatic models	1996+
P0716	Input/Turbine Speed Sensor Circuit Range/Performance	Transmission	High	Input speed sensor out of range	Check input speed sensor operation	Automatic models	1996+
P0717	Input/Turbine Speed Sensor Circuit No Signal	Transmission	High	Input speed sensor no signal	Test input speed sensor wiring	Automatic models	1996+
P0718	Input/Turbine Speed Sensor Circuit Intermittent	Transmission	High	Input speed sensor intermittent	Check input speed sensor connections	Automatic models	1996+
P0719	Torque Converter/Brake Switch B Circuit Low	Transmission	Medium	Brake switch circuit low	Test brake switch wiring	Automatic models	1996+
P0720	Output Speed Sensor Circuit Malfunction	Transmission	High	Output speed sensor failure	Test output speed sensor	Automatic models	1996+
P0721	Output Speed Sensor Circuit Range/Performance	Transmission	High	Output speed sensor out of range	Check output speed sensor operation	Automatic models	1996+
P0722	Output Speed Sensor Circuit No Signal	Transmission	High	Output speed sensor no signal	Test output speed sensor wiring	Automatic models	1996+
P0723	Output Speed Sensor Circuit Intermittent	Transmission	High	Output speed sensor intermittent	Check output speed sensor connections	Automatic models	1996+
P0724	Torque Converter/Brake Switch B Circuit High	Transmission	Medium	Brake switch circuit high	Check brake switch circuit	Automatic models	1996+
P0725	Engine Speed Input Circuit Malfunction	Transmission	High	Engine speed signal to TCM malfunction	Check engine speed signal to TCM	Automatic models	1996+
P0726	Engine Speed Input Circuit Range/Performance	Transmission	High	Engine speed signal out of range	Test engine speed signal to TCM	Automatic models	1996+
P0727	Engine Speed Input Circuit No Signal	Transmission	High	No engine speed signal to TCM	Check engine speed signal wiring	Automatic models	1996+
P0728	Engine Speed Input Circuit Intermittent	Transmission	High	Engine speed signal intermittent	Test engine speed signal connections	Automatic models	1996+
P0730	Incorrect Gear Ratio	Transmission	High	Transmission slipping; internal damage	Check transmission operation; may need rebuild	Automatic models	1996+
P0731	Gear 1 Incorrect Ratio	Transmission	High	1st gear ratio incorrect; slipping	Test 1st gear operation	Automatic models	1996+
P0732	Gear 2 Incorrect Ratio	Transmission	High	2nd gear ratio incorrect; slipping	Test 2nd gear operation	Automatic models	1996+
P0733	Gear 3 Incorrect Ratio	Transmission	High	3rd gear ratio incorrect; slipping	Test 3rd gear operation	Automatic models	1996+
P0734	Gear 4 Incorrect Ratio	Transmission	High	4th gear ratio incorrect; slipping	Test 4th gear operation	Automatic models	1996+
P0735	Gear 5 Incorrect Ratio	Transmission	High	5th gear ratio incorrect; slipping	Test 5th gear operation	5+ speed automatics	2000+
P0736	Reverse Incorrect Ratio	Transmission	High	Reverse gear ratio incorrect	Test reverse gear operation	Automatic models	1996+
P0740	Torque Converter Clutch Circuit Malfunction	Transmission	Medium	TCC solenoid failure; wiring issues	Test TCC solenoid and circuit	Automatic models	1996+
P0741	Torque Converter Clutch Circuit Performance or Stuck Off	Transmission	Medium	TCC not engaging; solenoid issues	Check TCC operation	Automatic models	1996+
P0742	Torque Converter Clutch Circuit Stuck On	Transmission	Medium	TCC stuck engaged; harsh shifts	Test TCC release operation	Automatic models	1996+
P0743	Torque Converter Clutch Circuit Electrical	Transmission	Medium	TCC circuit electrical problem	Check TCC circuit wiring	Automatic models	1996+
P0744	Torque Converter Clutch Circuit Intermittent	Transmission	Medium	TCC circuit intermittent operation	Test TCC circuit connections	Automatic models	1996+
P0745	Pressure Control Solenoid Malfunction	Transmission	High	Line pressure solenoid failure	Test line pressure solenoid	Automatic models	1996+
P0746	Pressure Control Solenoid Performance or Stuck Off	Transmission	High	Line pressure solenoid stuck off	Check line pressure solenoid operation	Automatic models	1996+
P0747	Pressure Control Solenoid Stuck On	Transmission	High	Line pressure solenoid stuck on	Test line pressure solenoid	Automatic models	1996+
P0748	Pressure Control Solenoid Electrical	Transmission	High	Line pressure solenoid electrical issue	Check line pressure solenoid wiring	Automatic models	1996+
P0749	Pressure Control Solenoid Intermittent	Transmission	High	Line pressure solenoid intermittent	Test line pressure solenoid connections	Automatic models	1996+
P0750	Shift Solenoid A Malfunction	Transmission	High	Shift solenoid A failure	Test shift solenoid A	Automatic models	1996+
P0751	Shift Solenoid A Performance or Stuck Off	Transmission	High	Shift solenoid A stuck off	Check shift solenoid A operation	Automatic models	1996+
P0752	Shift Solenoid A Stuck On	Transmission	High	Shift solenoid A stuck on	Test shift solenoid A	Automatic models	1996+
P0753	Shift Solenoid A Electrical	Transmission	High	Shift solenoid A electrical issue	Check shift solenoid A wiring	Automatic models	1996+
P0754	Shift Solenoid A Intermittent	Transmission	High	Shift solenoid A intermittent	Test shift solenoid A connections	Automatic models	1996+
P0755	Shift Solenoid B Malfunction	Transmission	High	Shift solenoid B failure	Test shift solenoid B	Automatic models	1996+
P0756	Shift Solenoid B Performance or Stuck Off	Transmission	High	Shift solenoid B stuck off	Check shift solenoid B operation	Automatic models	1996+
P0757	Shift Solenoid B Stuck On	Transmission	High	Shift solenoid B stuck on	Test shift solenoid B	Automatic models	1996+
P0758	Shift Solenoid B Electrical	Transmission	High	Shift solenoid B electrical issue	Check shift solenoid B wiring	Automatic models	1996+
P0759	Shift Solenoid B Intermittent	Transmission	High	Shift solenoid B intermittent	Test shift solenoid B connections	Automatic models	1996+
P0760	Shift Solenoid C Malfunction	Transmission	High	Shift solenoid C failure	Test shift solenoid C	Automatic models	1996+
P0761	Shift Solenoid C Performance or Stuck Off	Transmission	High	Shift solenoid C stuck off	Check shift solenoid C operation	Automatic models	1996+
P0762	Shift Solenoid C Stuck On	Transmission	High	Shift solenoid C stuck on	Test shift solenoid C	Automatic models	1996+
P0763	Shift Solenoid C Electrical	Transmission	High	Shift solenoid C electrical issue	Check shift solenoid C wiring	Automatic models	1996+
P0764	Shift Solenoid C Intermittent	Transmission	High	Shift solenoid C intermittent	Test shift solenoid C connections	Automatic models	1996+
P0765	Shift Solenoid D Malfunction	Transmission	High	Shift solenoid D failure	Test shift solenoid D	Automatic models	2000+
P0766	Shift Solenoid D Performance or Stuck Off	Transmission	High	Shift solenoid D stuck off	Check shift solenoid D operation	Automatic models	2000+
P0767	Shift Solenoid D Stuck On	Transmission	High	Shift solenoid D stuck on	Test shift solenoid D	Automatic models	2000+
P0768	Shift Solenoid D Electrical	Transmission	High	Shift solenoid D electrical issue	Check shift solenoid D wiring	Automatic models	2000+
P0769	Shift Solenoid D Intermittent	Transmission	High	Shift solenoid D intermittent	Test shift solenoid D connections	Automatic models	2000+
P0770	Shift Solenoid E Malfunction	Transmission	High	Shift solenoid E failure	Test shift solenoid E	Automatic models	2000+
P0771	Shift Solenoid E Performance or Stuck Off	Transmission	High	Shift solenoid E stuck off	Check shift solenoid E operation	Automatic models	2000+
P0772	Shift Solenoid E Stuck On	Transmission	High	Shift solenoid E stuck on	Test shift solenoid E	Automatic models	2000+
P0773	Shift Solenoid E Electrical	Transmission	High	Shift solenoid E electrical issue	Check shift solenoid E wiring	Automatic models	2000+
P0774	Shift Solenoid E Intermittent	Transmission	High	Shift solenoid E intermittent	Test shift solenoid E connections	Automatic models	2000+
P0781	1-2 Shift Malfunction	Transmission	High	1-2 shift problem; solenoids; valve body	Check 1-2 shift operation	Automatic models	1996+
P0782	2-3 Shift Malfunction	Transmission	High	2-3 shift problem; solenoids; valve body	Check 2-3 shift operation	Automatic models	1996+
P0783	3-4 Shift Malfunction	Transmission	High	3-4 shift problem; solenoids; valve body	Check 3-4 shift operation	Automatic models	1996+
P0784	4-5 Shift Malfunction	Transmission	High	4-5 shift problem; solenoids; valve body	Check 4-5 shift operation	5+ speed automatics	2000+
P0785	Shift/Timing Solenoid Malfunction	Transmission	High	Shift timing solenoid failure	Test shift timing solenoid	Automatic models	1996+
P0786	Shift/Timing Solenoid Range/Performance	Transmission	High	Shift timing solenoid performance	Check shift timing solenoid operation	Automatic models	1996+
P0787	Shift/Timing Solenoid Low	Transmission	High	Shift timing solenoid low	Test shift timing solenoid wiring	Automatic models	1996+
P0788	Shift/Timing Solenoid High	Transmission	High	Shift timing solenoid high	Check shift timing solenoid circuit	Automatic models	1996+
P0789	Shift/Timing Solenoid Intermittent	Transmission	High	Shift timing solenoid intermittent	Test shift timing solenoid connections	Automatic models	1996+
P0790	Normal/Performance Switch Circuit Malfunction	Transmission	Low	Normal/Performance switch failure	Test mode switch	Automatic models	1996+
P0791	Intermediate Shaft Speed Sensor Circuit	Transmission	Medium	Intermediate shaft speed sensor failure	Test intermediate shaft speed sensor	Some automatics	2000+
P0792	Intermediate Shaft Speed Sensor Circuit Range/Performance	Transmission	Medium	Intermediate shaft speed sensor out of range	Check intermediate shaft speed sensor	Some automatics	2000+
P0793	Intermediate Shaft Speed Sensor Circuit No Signal	Transmission	Medium	Intermediate shaft speed sensor no signal	Test intermediate shaft speed sensor wiring	Some automatics	2000+
P0794	Intermediate Shaft Speed Sensor Circuit Intermittent	Transmission	Medium	Intermediate shaft speed sensor intermittent	Check intermediate shaft speed sensor connections	Some automatics	2000+
P1120	Accelerator Pedal Position Sensor Circuit Malfunction	Engine	High	Accelerator pedal position sensor failure	Test accelerator pedal position sensor	Drive-by-wire models	2002+
P1121	Accelerator Pedal Position Sensor Range/Performance Problem	Engine	High	Accelerator pedal position sensor out of range	Check accelerator pedal position sensor operation	Drive-by-wire models	2002+
P1125	Throttle Control Motor Circuit Malfunction	Engine	Critical	Throttle control motor failure	Test throttle control motor	Drive-by-wire models	2002+
P1126	Magnetic Clutch Circuit Malfunction	HVAC	Low	A/C magnetic clutch circuit malfunction	Test A/C clutch circuit	All models	1996+
P1127	EVAP Vapor Pressure Sensor Circuit Low Input	Emissions	Low	EVAP vapor pressure sensor low	Test EVAP pressure sensor	Some models	2000+
P1128	EVAP Vapor Pressure Sensor Circuit High Input	Emissions	Low	EVAP vapor pressure sensor high	Check EVAP pressure sensor	Some models	2000+
P1129	EVAP Vapor Pressure Sensor Circuit Range/Performance	Emissions	Low	EVAP vapor pressure sensor out of range	Check EVAP pressure sensor operation	Some models	2000+
P1130	A/F Sensor Circuit Range/Performance Malfunction Bank 1 Sensor 1	Fuel	Medium	Air/fuel ratio sensor malfunction	Test A/F ratio sensor	Models with A/F sensors	2000+
P1133	A/F Sensor Circuit Response Malfunction Bank 1 Sensor 1	Fuel	Medium	Air/fuel ratio sensor slow response	Check A/F ratio sensor operation	Models with A/F sensors	2000+
P1135	A/F Sensor Heater Circuit Malfunction Bank 1 Sensor 1	Fuel	Medium	Air/fuel ratio sensor heater failure	Test A/F sensor heater circuit	Models with A/F sensors	2000+
P1150	A/F Sensor Circuit Range/Performance Malfunction Bank 2 Sensor 1	Fuel	Medium	Bank 2 air/fuel ratio sensor malfunction	Test Bank 2 A/F ratio sensor	V6/V8 with A/F sensors	2000+
P1153	A/F Sensor Circuit Response Malfunction Bank 2 Sensor 1	Fuel	Medium	Bank 2 air/fuel ratio sensor slow response	Check Bank 2 A/F ratio sensor	V6/V8 with A/F sensors	2000+
P1155	A/F Sensor Heater Circuit Malfunction Bank 2 Sensor 1	Fuel	Medium	Bank 2 air/fuel ratio sensor heater failure	Test Bank 2 A/F sensor heater	V6/V8 with A/F sensors	2000+
P1200	Fuel Pump Relay Circuit Malfunction	Fuel	High	Fuel pump relay control circuit failure	Test fuel pump relay control	All models	1996+
P1300	Igniter Circuit Malfunction No 1	Ignition	High	Igniter circuit 1 failure	Test igniter circuit	Older models	1996-2005
P1305	Igniter Circuit Malfunction No 2	Ignition	High	Igniter circuit 2 failure	Test igniter circuit 2	V6/V8 older models	1996-2005
P1310	Igniter Circuit Malfunction No 3	Ignition	High	Igniter circuit 3 failure	Test igniter circuit 3	V6/V8 older models	1996-2005
P1315	Igniter Circuit Malfunction No 4	Ignition	High	Igniter circuit 4 failure	Test igniter circuit 4	V8 older models	1996-2005
P1349	VVT System Malfunction	Engine	Medium	Variable valve timing system malfunction	Check VVT system operation	Models with VVT	2000+
P1354	VVT System Malfunction Bank 2	Engine	Medium	Bank 2 VVT system malfunction	Check Bank 2 VVT system	V6/V8 with VVT	2005+
P1400	Sub-Throttle Position Sensor Malfunction	Engine	Medium	Sub-throttle position sensor failure	Test sub-throttle position sensor	Some models	2000+
P1401	Sub-Throttle Position Sensor Range/Performance	Engine	Medium	Sub-throttle position sensor out of range	Check sub-throttle position sensor	Some models	2000+
P1405	EGR Temperature Sensor Circuit Malfunction	Emissions	Low	EGR temperature sensor failure	Test EGR temperature sensor	Models with EGR temp sensor	1996+
P1406	EGR Temperature Sensor Circuit Range/Performance	Emissions	Low	EGR temperature sensor out of range	Check EGR temperature sensor operation	Models with EGR temp sensor	1996+
P1410	EGR Temperature Sensor Circuit High Input	Emissions	Low	EGR temperature sensor high signal	Test EGR temperature sensor	Models with EGR temp sensor	1996+
P1411	EGR Temperature Sensor Circuit Low Input	Emissions	Low	EGR temperature sensor low signal	Check EGR temperature sensor wiring	Models with EGR temp sensor	1996+
P1500	Starter Signal Circuit Malfunction	Electrical	Medium	Starter signal circuit failure	Test starter signal circuit	All models	1996+
P1510	Backup Power Supply Malfunction	Electrical	Low	Backup power supply circuit failure	Check backup power supply	All models	2000+
P1520	Stop Light Switch Signal Malfunction	Body	Low	Stop light switch signal failure	Test stop light switch signal	All models	1996+
P1600	PCM Battery Circuit Malfunction	ECM	Medium	ECM battery backup circuit failure	Check ECM power supply	All models	1996+
P1605	Rough Idle Control System Malfunction	Engine	Medium	Rough idle control system failure	Check idle control system	Some models	1996+
P1656	Waste Gate Valve Control Circuit Malfunction	Engine	Medium	Turbo waste gate control failure	Test waste gate control	Turbocharged models	2000+
P1780	Park/Neutral Position Switch Malfunction	Transmission	Medium	Park/neutral switch malfunction	Test park/neutral switch	Automatic models	1996+
B1479	Driver Seat Position Sensor Circuit Malfunction	Body	Low	Driver seat position sensor failure	Replace seat position sensor	Camry; Avalon; Lexus	2005+
B1650	Data Communication Line Malfunction	Network	Medium	Communication bus malfunction	Check communication wiring	All models	2000+
B2799	Steering Angle Sensor Initialization Incomplete	Steering	Medium	Steering angle sensor needs calibration	Calibrate steering angle sensor	Models with ESC	2008+
C1201	Engine Control System Malfunction	ABS/VSC	High	Engine control system affecting ABS/VSC	Diagnose engine codes first	Models with VSC	2004+
C1203	ABS Control System Malfunction	ABS	High	ABS control system failure	Test ABS system	All models	1996+
C1223	ABS Sensor Circuit Open/Short Circuit Front Right	ABS	Medium	Front right ABS sensor circuit failure	Test front right ABS sensor	All models	1996+
C1224	ABS Sensor Circuit Open/Short Circuit Front Left	ABS	Medium	Front left ABS sensor circuit failure	Test front left ABS sensor	All models	1996+
C1233	ABS Sensor Circuit Open/Short Circuit Rear Right	ABS	Medium	Rear right ABS sensor circuit failure	Test rear right ABS sensor	All models	1996+
C1234	ABS Sensor Circuit Open/Short Circuit Rear Left	ABS	Medium	Rear left ABS sensor circuit failure	Test rear left ABS sensor	All models	1996+
C1241	Low Battery Positive Voltage	ABS	Medium	Low battery voltage affecting ABS	Check battery and charging system	All models	1996+
C1242	ABS Inlet Valve Circuit Malfunction Right Front	ABS	High	Right front ABS inlet valve failure	Test right front inlet valve	All models	1996+
C1243	ABS Inlet Valve Circuit Malfunction Left Front	ABS	High	Left front ABS inlet valve failure	Test left front inlet valve	All models	1996+
C1244	ABS Inlet Valve Circuit Malfunction Right Rear	ABS	High	Right rear ABS inlet valve failure	Test right rear inlet valve	All models	1996+
C1245	ABS Inlet Valve Circuit Malfunction Left Rear	ABS	High	Left rear ABS inlet valve failure	Test left rear inlet valve	All models	1996+
C1246	ABS Outlet Valve Circuit Malfunction Right Front	ABS	High	Right front ABS outlet valve failure	Test right front outlet valve	All models	1996+
C1247	ABS Outlet Valve Circuit Malfunction Left Front	ABS	High	Left front ABS outlet valve failure	Test left front outlet valve	All models	1996+
C1248	ABS Outlet Valve Circuit Malfunction Right Rear	ABS	High	Right rear ABS outlet valve failure	Test right rear outlet valve	All models	1996+
C1249	ABS Outlet Valve Circuit Malfunction Left Rear	ABS	High	Left rear ABS outlet valve failure	Test left rear outlet valve	All models	1996+
C1252	ABS Pump Motor Circuit Malfunction	ABS	High	ABS pump motor failure	Test ABS pump motor	All models	1996+
C1253	ABS Pump Motor Relay Circuit Malfunction	ABS	High	ABS pump motor relay failure	Test ABS pump relay	All models	1996+
C1256	ABS Actuator Power Source Circuit Malfunction	ABS	High	ABS actuator power supply failure	Check ABS power supply	All models	1996+
C1271	ABS/TRC/VSC System Prohibit	ABS/VSC	Medium	ABS/TRC/VSC system disabled	Check system operation conditions	Models with VSC	2004+
C1277	VSC/TRAC System Malfunction	VSC	Medium	Vehicle stability control malfunction	Test VSC system	Models with VSC	2004+
C1278	VSC/TRAC System Temporarily Malfunctioning	VSC	Medium	VSC system temporarily disabled	Check VSC system conditions	Models with VSC	2004+
C1279	VSC System Malfunction	VSC	Medium	VSC system failure	Test VSC components	Models with VSC	2004+
C1288	Brake Booster Pressure Sensor Circuit	Brakes	Medium	Brake booster pressure sensor failure	Test brake booster sensor	Models with brake assist	2010+
C1336	TRAC System Malfunction	TRAC	Medium	Traction control system failure	Test TRAC system	Models with TRAC	2000+
C1391	G-Sensor Malfunction	VSC	Medium	G-sensor (accelerometer) failure	Test G-sensor	Models with VSC	2004+
C1392	Yaw Rate Sensor Circuit Malfunction	VSC	Medium	Yaw rate sensor failure	Test yaw rate sensor	Models with VSC	2004+
C1425	Deceleration Sensor Circuit Malfunction	VSC	Medium	Deceleration sensor failure	Test deceleration sensor	Models with VSC	2004+
C1426	Deceleration Sensor Range/Performance	VSC	Medium	Deceleration sensor out of range	Check deceleration sensor operation	Models with VSC	2004+
C1427	Deceleration Sensor Circuit Low	VSC	Medium	Deceleration sensor low signal	Test deceleration sensor wiring	Models with VSC	2004+
C1428	Deceleration Sensor Circuit High	VSC	Medium	Deceleration sensor high signal	Check deceleration sensor	Models with VSC	2004+
U0073	Control Module Communication Bus A Off	Network	Medium	CAN bus communication error	Check CAN bus wiring and termination	2010+ models	2010+
U0100	Lost Communication with ECM/PCM	Network	High	ECM communication lost	Check ECM communication	All models	2003+
U0101	Lost Communication with TCM	Network	High	TCM communication lost	Check TCM communication	Automatic models	2003+
U0122	Lost Communication with Vehicle Dynamics Control Module	Network	Medium	VSC module communication lost	Check VSC module communication	Models with VSC	2008+
U0140	Lost Communication with Body Control Module	Network	Medium	BCM communication lost	Check BCM communication	All models	2005+
U0151	Lost Communication with Restraints Control Module	Network	Medium	Airbag module communication lost	Check airbag module communication	All models	2003+
U0155	Lost Communication with Instrument Panel Control Module	Network	Low	Instrument cluster communication lost	Check cluster communication	All models	2005+
U0164	Lost Communication with HVAC Control Module	Network	Low	HVAC module communication lost	Check HVAC module communication	All models	2005+
U0167	Lost Communication with Vehicle Immobilizer Control Module	Network	Medium	Immobilizer module communication lost	Check immobilizer communication	Models with immobilizer	2005+
U0168	Lost Communication with Vehicle Security Control Module	Network	Medium	Security module communication lost	Check security module communication	Models with security	2005+
U0200	Internal Control Module Configuration Error	ECM	Medium	ECM configuration mismatch	Reprogram ECM configuration	All models	2005+
U0293	Lost Communication with Hybrid Powertrain Control Module	Network	High	Hybrid control module communication lost	Check hybrid system communication	Hybrid models	2004+
U1001	CAN Communication System	Network	Medium	CAN communication system malfunction	Check CAN bus system	All models	2003+
U1411	SRS Communication Malfunction	Network	Medium	Airbag system communication error	Check SRS communication	All models	2000+
U1412	Battery Voltage Low	Electrical	Medium	Low battery voltage detected	Check battery and charging system	All models	2000+

Instantly decode over 10,000+ Toyota diagnostic trouble codes

🔧What are DTC Codes?

Diagnostic Trouble Codes (DTCs) are standardized codes that identify specific problems in your Toyota vehicle’s systems. When your check engine light comes on, these codes help pinpoint the exact issue, saving you time and money on repairs.

OBD-II standardized codes (P, B, C, U prefixes)
Toyota-specific manufacturer codes
Engine, transmission, ABS, and airbag codes
Real-time diagnostic information

📱How to Use

Using our free Toyota DTC lookup is simple and straightforward:

Connect OBD-II scanner to your Toyota’s diagnostic port
Retrieve the code displayed on your scanner
Enter the code in our search box above
Get detailed explanation and repair suggestions

No registration required • Completely free • Updated database

🌟 Why Choose Our Toyota DTC Lookup?

✅ Comprehensive Database

Over 10,000 Toyota-specific and generic OBD-II codes covering all models from 1996 to 2024, including Camry, Corolla, RAV4, Prius, Tacoma, and more.

🚀 Instant Results

Get immediate code explanations, possible causes, and recommended repair procedures. No waiting, no delays.

💰 100% Free

No hidden fees, subscriptions, or registration required. Access our complete Toyota DTC database absolutely free.

🔄 Regular Updates

Our database is continuously updated with the latest Toyota diagnostic codes and technical service bulletins.

📚 Detailed Explanations

Each code includes symptoms, possible causes, diagnostic steps, and repair solutions with difficulty ratings.

📱 Mobile Friendly

Access our DTC lookup tool from any device – smartphone, tablet, or computer. Perfect for garage use.

🔍 Common Toyota DTC Codes

P0171

System Too Lean (Bank 1)
Fuel system running lean, possible vacuum leak or faulty MAF sensor.

P0300

Random/Multiple Cylinder Misfire
Engine misfiring across multiple cylinders, check ignition system.

P0420

Catalyst System Efficiency Below Threshold
Catalytic converter not working efficiently, may need replacement.

P0401

Insufficient EGR Flow
EGR valve not opening properly, clean or replace EGR components.

P0122

TPS Circuit Low Input
Throttle position sensor voltage too low, check wiring or replace sensor.

P0505

Idle Air Control System Malfunction
IAC valve stuck or faulty, clean throttle body or replace IAC valve.

🔗 Additional Free Toyota DTC Resources

DTCSearch.com

Comprehensive search engine for OBD-II diagnostic codes with manufacturer-specific Toyota codes.

Visit DTCSearch →

TroubleCodes.net – Toyota

Dedicated Toyota OBD/OBD2 codes section with detailed explanations and repair procedures.

Browse Toyota Codes →

4crawler.com Toyota Tech

Technical resource for Toyota EFI and TCCS engine management diagnostic codes with detailed explanations.

Toyota Tech Info →

Toyota Service Bulletins

Official Toyota technical service bulletins and recalls related to diagnostic trouble codes.

Service Bulletins →