Toyota DTC C1345 – Toyota DTC C1368
C1345 Toyota Prius PDF
Toyota Diagnostic Trouble Codes (DTC) C1345 and C1368 are related to the vehicle’s Anti-lock Brake System (ABS) and the Vehicle Stability Control (VSC) system. Here’s a breakdown of what each code means and potential solutions:
DTC C1345: “Linear Solenoid Valve Offset Learning Incomplete”
- Description: This code indicates that the system has not completed the linear solenoid valve offset learning procedure, which is necessary after certain repairs or maintenance are performed on the braking system, particularly the ABS module or components.
- Causes:
- Recent replacement or repair of ABS components (such as the actuator or master cylinder).
- The battery was disconnected or replaced, erasing the memory of the ABS module.
- Calibration procedure for the linear solenoid valve was not completed properly.
- Solution:
- Complete the Learning Procedure: You can use a Toyota Techstream diagnostic tool or an equivalent OBD-II scanner to perform the linear solenoid valve calibration. This is necessary to allow the ABS system to recalibrate and function correctly.
- Check ABS Components: Ensure that all ABS components are installed correctly, and there are no wiring or connector issues.
- Clear the Code: Once the calibration is successfully completed, clear the code using the diagnostic tool. If the calibration is not done, the code will keep reappearing.
DTC C1368: “Yaw Rate Sensor Calibration Incomplete”
- Description: This code indicates that the yaw rate sensor calibration procedure has not been completed. The yaw rate sensor is responsible for detecting the rotational movement of the vehicle and is critical to the proper functioning of the Vehicle Stability Control (VSC) system.
- Causes:
- Battery was disconnected or replaced.
- Yaw rate sensor or steering angle sensor replacement or malfunction.
- The sensor calibration procedure was not carried out after repairs.
- Solution:
- Perform Yaw Rate Sensor Calibration: Similar to C1345, this code requires a recalibration using the Toyota Techstream or a compatible OBD-II scanner. The tool guides you through the calibration process for the yaw rate sensor.
- Check the Yaw Rate Sensor and Wiring: Ensure that the sensor and related wiring are intact and functioning properly.
- Clear the Code: After calibration, clear the code using the diagnostic tool. If calibration is successful, the code should not reappear.
Steps to Perform Calibration for Both DTCs:
- Connect a Diagnostic Tool: Use a Toyota-specific diagnostic tool like Techstream or any advanced OBD-II scanner that supports ABS and stability control systems.
- Access the ABS/VSC System: Navigate to the ABS and VSC section in the diagnostic tool.
- Perform the Calibration:
- For DTC C1345: Perform linear solenoid valve offset calibration.
- For DTC C1368: Perform the yaw rate sensor calibration.
- Test the System: Once the calibration is complete, test drive the vehicle to ensure the systems are functioning correctly.
- Clear the Codes: After calibration, use the diagnostic tool to clear the error codes.
Why These Codes Appear:
- These codes typically appear after the battery has been disconnected or replaced, or after work has been done on the braking or stability control systems. The vehicle needs to recalibrate the sensors to ensure proper operation of the ABS and VSC systems.
If you don’t have access to a diagnostic tool, it’s recommended to visit a Toyota dealership or a repair shop that can perform these calibrations properly.