WOMS
U code network Medium severity

U2855 Lost Communication with the Steering Angle Sensor

The OBD2 code U2855 indicates a loss of communication with the steering angle sensor, which may affect the vehicle's stability control and steering functions

Definition

The OBD2 code U2855 indicates a loss of communication with the steering angle sensor, which may affect the vehicle's stability control and steering functions

Common causes

  • Faulty steering angle sensor
  • Damaged wiring or connectors
  • Poor electrical connections
  • Malfunctioning vehicle control module
  • Software issues or outdated firmware
  • Interference from other electronic components
  • Corrosion or dirt on connectors
  • Incorrect sensor calibration

Common misdiagnoses

  • Faulty Steering Angle Sensor
  • Wiring Issues or Short Circuits
  • Faulty Body Control Module (BCM)
  • Faulty Electronic Power Steering (EPS) Module
  • Incorrectly Calibrated Steering Angle Sensor
  • Faulty Instrument Cluster
  • Issues with the CAN Bus Communication
  • Battery or Grounding Problems

Troubleshooting steps

  1. 1. Check for Other Codes

    Use an OBD-II scanner to check for any additional trouble codes. Sometimes, multiple 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, 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 signal output

  5. 5. Replacement

    If the sensor is faulty, consider replacing it

  6. 6. Check the Power and Ground

    Verify that the steering angle sensor is receiving the correct voltage and has a good ground connection. Use a multimeter to check for power and ground at the sensor connector

  7. 7. Inspect the CAN Bus

    Since the steering angle sensor communicates over the CAN bus, check for any issues with the CAN bus wiring. Look for shorts, opens, or other faults in the wiring

  8. 8. Use a scan tool to monitor the CAN bus for any communication issues

  9. 9. Check for Software Updates

    Sometimes, manufacturers release software updates that can resolve communication issues. Check if there are any updates available for your vehicle’s ECU

  10. 10. 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

  11. 11. 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.Conclusion By following these troubleshooting steps, you can systematically identify and resolve the issue related to the U2855 code. Always ensure safety precautions are taken when working on vehicle electrical systems