WOMS
U code network Medium severity

U2748 Invalid Data Received from the Steering Angle Sensor

The OBD2 code U2748 indicates that the vehicle's control module has received invalid or erroneous data from the steering angle sensor, which may affect systems like stability control or steering assistance

Definition

The OBD2 code U2748 indicates that the vehicle's control module has received invalid or erroneous data from the steering angle sensor, which may affect systems like stability control or steering assistance

Common causes

  • Faulty steering angle sensor
  • Poor electrical connections or wiring issues
  • Corrupted or incompatible software/firmware
  • Calibration issues
  • Malfunctioning power steering control module
  • Interference from other electronic components
  • Low battery voltage or power supply issues

Common misdiagnoses

  • Faulty Steering Angle Sensor
  • Wiring Issues or Short Circuits
  • Faulty Electronic Control Unit (ECU)
  • Calibration Errors
  • Faulty Wheel Speed Sensors
  • Issues with the Power Steering System
  • Incorrect Tire Pressure or Size
  • Problems with the Vehicle Stability Control (VSC) System

Troubleshooting steps

  1. 1. Check for Other Codes

    Before focusing on U2748, scan the vehicle for any other related trouble codes. Other codes may provide additional context or indicate a broader issue

  2. 2. Inspect Wiring and Connectors

  3. 3. Visually inspect the wiring 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. Use a multimeter or a scan tool to check the output of the steering angle sensor. Compare the readings to the manufacturer's specifications

  7. 7. If the sensor is not providing the correct data, it may need to be replaced

  8. 8. Check for Mechanical Issues

  9. 9. Ensure that the steering system is functioning properly. Check for any binding or mechanical issues that could affect the sensor's operation

  10. 10. Verify that the steering wheel is centered and that the sensor is calibrated correctly

  11. 11. Inspect the Control Module

  12. 12. Check the vehicle's control module (such as the ABS or stability control module) for any faults. Sometimes, the issue may lie within the module itself

  13. 13. Ensure that the module is receiving power and ground as required

  14. 14. Perform a Calibration

  15. 15. If the steering angle sensor has been replaced or if there have been any repairs to the steering system, it may need to be calibrated. Follow the manufacturer's procedure for calibration

  16. 16. Check for Software Updates

  17. 17. Sometimes, software issues can cause communication problems. Check if there are any available updates for the vehicle's control modules

  18. 18. Clear Codes and Test Drive

  19. 19. After performing the necessary repairs or adjustments, clear the trouble codes and take the vehicle for a test drive to see if the code returns

  20. 20. Consult Technical Service Bulletins (TSBs)

  21. 21. Look for any TSBs related to the steering angle sensor or the specific vehicle model. Manufacturers may have issued guidance on common issues and fixes

  22. 22. Seek Professional Help

  23. 23. If the issue persists after following these steps, it may be necessary to consult a professional mechanic or technician who has experience with the specific vehicle and its systems. By following these troubleshooting steps, you should be able to identify and resolve the issue related to the U2748 code