WOMS
U code network Medium severity

U2133 Lost Communication with the Steering Angle Sensor

The OBD2 code U2133 indicates a loss of communication between the vehicle's control modules and the steering angle sensor, which may affect systems that rely on steering input for operation

Definition

The OBD2 code U2133 indicates a loss of communication between the vehicle's control modules and the steering angle sensor, which may affect systems that rely on steering input for operation

Common causes

  • Faulty steering angle sensor
  • Damaged wiring or connectors
  • Poor electrical connections
  • Malfunctioning control module
  • Software issues or updates needed
  • Corrosion or dirt in connectors
  • Battery or power supply issues
  • Interference from other electronic components

Common misdiagnoses

  • Faulty steering angle sensor
  • Wiring issues or damaged connectors
  • Faulty electronic control unit (ECU)
  • Incorrectly calibrated steering angle sensor
  • Issues with the vehicle's CAN bus system
  • Faulty power supply to the sensor
  • Problems with the stability control system
  • Misdiagnosed wheel speed sensors
  • Faulty steering column or rack components
  • Software issues or outdated firmware in the ECU

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 about the issue

  2. 2. Inspect Wiring and Connectors

    Visual Inspection: Check the wiring harness and connectors related to 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. Resistance and Voltage

    Check the resistance and voltage output of the sensor according to the manufacturer’s specifications

  6. 6. Check for Power and Ground

    Verify that the steering angle sensor is receiving the correct power and ground signals. Use a multimeter to check for voltage 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 or other modules on the bus

  8. 8. Termination Resistors

    Ensure that the CAN bus termination resistors are present and functioning correctly

  9. 9. Look for Intermittent Issues

    Sometimes, the issue may be intermittent. Pay attention to when the code appears (e.g., during specific driving conditions or after certain maneuvers)

  10. 10. Check for Software 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 any repairs or checks, clear the codes 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

  13. 13. Replace the Steering Angle Sensor

    If all other checks are satisfactory and the issue persists, consider replacing the steering angle sensor, as it may be faulty.1

  14. 14. Professional Diagnosis

    If you are unable to resolve the issue, it may be best to consult a professional mechanic or dealership for further diagnosis. By following these steps, you should be able to identify the cause of the U2133 code and take appropriate action to resolve the communication issue with the steering angle sensor