WOMS
U code network Medium severity

U0271 Communication with the Steering Angle Sensor 'A' is Invalid

The OBD2 code U0271 indicates that there is a communication issue with the Steering Angle Sensor 'A', meaning the vehicle's control module is not receiving valid data from the sensor

Definition

The OBD2 code U0271 indicates that there is a communication issue with the Steering Angle Sensor 'A', meaning the vehicle's control module is not receiving valid data from the sensor

Common causes

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

Common misdiagnoses

  • Faulty Steering Angle Sensor
  • Wiring Issues or Short Circuits
  • Faulty Body Control Module (BCM)
  • Faulty Electronic Power Steering (EPS) Module
  • Calibration Issues
  • Faulty Instrument Cluster
  • Software or Firmware Issues
  • Battery Voltage Problems

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

  3. 3. Visually inspect the wiring harness and connectors associated with the steering angle sensor. Look for signs of damage, corrosion, or loose connections

  4. 4. Ensure that all connectors are securely plugged in and that there are no bent pins

  5. 5. Test the Steering Angle Sensor

  6. 6. If possible, test the steering angle sensor using a multimeter or scan tool to ensure it is functioning correctly. Check the sensor's output voltage and compare it to the manufacturer's specifications

  7. 7. If the sensor is faulty, it may need to be replaced

  8. 8. Check for Ground Issues

  9. 9. Ensure that the steering angle sensor has a good ground connection. A poor ground can lead to communication issues

  10. 10. Use a multimeter to test the ground connection

  11. 11. Inspect the Control Module

  12. 12. Check the vehicle's control module (such as the ABS or stability control module) for any signs of damage or malfunction

  13. 13. Ensure that the module is receiving power and is functioning correctly

  14. 14. Look for Software Updates

  15. 15. Check if there are any software updates available for the vehicle's control modules. Sometimes, manufacturers release updates to fix communication issues

  16. 16. Clear Codes and Test Drive

  17. 17. After performing any repairs or adjustments, clear the trouble codes using the OBD-II scanner and take the vehicle for a test drive to see if the code returns

  18. 18. Consult Technical Service Bulletins (TSBs)

  19. 19. Look for any TSBs related to the steering angle sensor or communication issues for your specific vehicle make and model. Manufacturers may have specific recommendations for addressing this code

  20. 20. Professional Diagnosis

  21. 21. If the issue persists after performing the above steps, consider seeking help from a professional mechanic or dealership. They may have specialized diagnostic tools and experience to pinpoint the problem. By following these steps, you should be able to identify and resolve the issue related to the U0271 code