P0121 Toyota
P0121 Toyota The P0121 diagnostic trouble code (DTC) in a Toyota indicates an issue with the Throttle/Pedal Position Sensor “A” Circuit Range/Performance. This means that the Throttle Position Sensor (TPS) is sending an out-of-range or inconsistent signal to the Engine Control Module (ECM), potentially affecting throttle response and engine performance. Common Symptoms of P0121 in … Read more