WOMS
U code network Medium severity

U2136 Lost Communication with the Steering Angle Sensor Module

The OBD2 code U2136 indicates that there is a loss of communication between the vehicle's control module and the steering angle sensor module, which may affect the vehicle's stability control and steering functions

Definition

The OBD2 code U2136 indicates that there is a loss of communication between the vehicle's control module and the steering angle sensor module, 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 updates needed
  • Corroded terminals
  • Interference from other electronic components
  • Low battery voltage or power supply issues

Common misdiagnoses

  • Faulty Steering Angle Sensor
  • Wiring or connector issues
  • Faulty Body Control Module (BCM)
  • Faulty Electronic Power Steering (EPS) module
  • Incorrectly calibrated steering angle sensor
  • Faulty ABS module
  • Software or firmware issues in the vehicle's control modules
  • Battery or charging system 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 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, corroded, or pushed back

  4. 4. Test the Steering Angle Sensor

    Sensor Functionality: If possible, test the steering angle sensor to ensure it is functioning correctly. This may involve using a multimeter or an oscilloscope to check the output signals

  5. 5. Calibration

    Some vehicles require the steering angle sensor to be calibrated after installation or repair. Check the vehicle’s service manual for calibration procedures

  6. 6. Check the CAN Bus Communication

    Network Integrity: Inspect the CAN bus wiring for continuity and integrity. Look for shorts, opens, or high resistance in the wiring

  7. 7. Scan Other Modules

    Use a scan tool to check if other modules on the CAN bus are communicating properly. If other modules are also having communication issues, the problem may lie within the CAN bus itself

  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 steering angle sensor are secure and free of corrosion

  10. 10. Check for Software Updates

    ECU Updates: Sometimes, manufacturers release software updates for the vehicle’s ECU that can resolve communication issues. Check with the dealership or manufacturer 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. Manufacturers may have documented common issues and fixes

  13. 13. Professional Diagnosis

    If the issue persists after performing the above steps, it may be necessary to consult a professional mechanic or technician who has access to advanced diagnostic tools and equipment. By following these steps, you should be able to identify and resolve the issue related to the U2136 code. Always refer to the specific service manual for your vehicle for detailed procedures and specifications