WOMS
U code network Medium severity

U022C Lost Communication with the Steering Angle Sensor

The OBD2 code U022C indicates a loss of communication with the steering angle sensor, which may affect the vehicle's stability control and steering response systems

Definition

The OBD2 code U022C indicates a loss of communication with the steering angle sensor, which may affect the vehicle's stability control and steering response systems

Common causes

  • Faulty steering angle sensor
  • Damaged wiring or connectors
  • Poor electrical connections
  • Malfunctioning vehicle control module
  • Software issues or bugs
  • Corrosion in connectors or terminals
  • Interference from other electronic components
  • Low battery voltage or power supply issues

Common misdiagnoses

  • Faulty steering angle sensor
  • Wiring issues or damaged connectors
  • Faulty steering column control module
  • Issues with the vehicle's CAN bus system
  • Faulty ABS module
  • Incorrectly calibrated steering angle sensor
  • Power supply issues to the sensor or module
  • Software or firmware issues in the vehicle's control modules

Troubleshooting steps

  1. 1. Check for Other Codes

    Use an OBD-II scanner to check for any additional trouble codes. Sometimes, related codes can provide more context for the issue

  2. 2. Inspect Wiring and Connectors

    Visual Inspection: Check the wiring harness and connectors associated with the steering angle sensor for any signs of damage, corrosion, or loose connections

  3. 3. Connector Pins

    Ensure that the pins in the connectors are not bent or corroded

  4. 4. Test the Steering Angle Sensor

    Sensor Functionality: If possible, test the steering angle sensor using a multimeter or scan tool to ensure it is functioning correctly

  5. 5. Signal Output

    Check the output signal of the sensor while turning the steering wheel to see if it changes appropriately

  6. 6. Check Power and Ground

    Power Supply: Verify that the steering angle sensor is receiving the correct voltage as specified in the vehicle’s service manual

  7. 7. Ground Connection

    Ensure that the ground connection for the sensor is intact and has a good connection

  8. 8. Inspect the CAN Bus

    Communication Lines: Since the steering angle sensor communicates over the CAN bus, check for any issues with the CAN wiring. Look for shorts, opens, or interference

  9. 9. Other Modules

    Ensure that other modules on the CAN bus are functioning correctly, as a fault in one module can affect communication

  10. 10. Check for Software Updates

    ECU Updates: Check if there are any software updates available for the vehicle’s ECU that may address communication issues

  11. 11. Clear Codes and Test Drive

    After performing the above checks and repairs, clear the trouble codes using the OBD-II scanner and take the vehicle for a test drive to see if the code returns

  12. 12. Professional Diagnosis

    If you are unable to resolve the issue, consider seeking help from a professional mechanic or dealership, as they may have specialized tools and knowledge to diagnose the problem accurately. By following these steps, you should be able to identify the cause of the U022C code and take appropriate action to resolve the communication issue with the steering angle sensor