WOMS
U code network Medium severity

U2663 Lost Communication with the Steering Angle Sensor

The OBD2 code U2663 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 U2663 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 power supply to the sensor
  • Software or calibration issues
  • Faulty vehicle control module (VCM)
  • Interference from other electronic components

Common misdiagnoses

  • Faulty steering angle sensor
  • Wiring issues or damaged connectors
  • Faulty power steering control module
  • Incorrectly calibrated steering angle sensor
  • Faulty vehicle stability control module
  • Issues with the ABS module
  • Problems with the CAN bus communication system
  • Low battery voltage or electrical system issues

Troubleshooting steps

  1. 1. Check for Additional Codes

    Use an OBD-II scanner to check for any other related trouble codes. This can provide more context and help identify if there are other issues present

  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, corroded, or damaged

  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. Check for proper voltage and resistance values as specified in the vehicle’s service manual

  5. 5. Calibration

    Some vehicles require the steering angle sensor to be calibrated after installation or repair. Check if calibration is necessary

  6. 6. Check the CAN Bus Communication

    Network Integrity: Inspect the CAN bus wiring for shorts, opens, or other issues. Use a scan tool to monitor the communication between modules

  7. 7. Other Modules

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

  8. 8. Inspect the Power and Ground Supply

    Power Supply: Verify that the steering angle sensor is receiving the correct voltage. Check the vehicle’s wiring diagrams for the correct voltage specifications

  9. 9. Ground Connections

    Ensure that the ground connections for the sensor are secure and free of corrosion

  10. 10. Check for Software Updates

    ECU Updates: Sometimes, manufacturers release software updates that can resolve communication issues. Check with the manufacturer or a dealership for any available updates

  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. Consult Technical Service Bulletins (TSBs)

    Look for any TSBs related to the steering angle sensor or communication issues for your specific vehicle make and model. These can provide valuable insights and solutions

  13. 13. Professional Diagnosis

    If the issue persists after performing the above steps, consider seeking help from a professional mechanic or dealership, as they may have specialized tools and knowledge to diagnose complex issues. By following these steps, you should be able to identify and resolve the issue related to the U2663 code. Always refer to the specific service manual for your vehicle for detailed procedures and specifications