WOMS
C code chassis Medium severity

C1260 Speed Wheel RR Comparison Failure

The OBD2 code C1260 Speed Wheel RR Comparison Failure indicates a discrepancy in the speed readings between the right rear wheel speed sensor and the other wheel speed sensors, suggesting a potential issue with the...

Definition

The OBD2 code C1260 Speed Wheel RR Comparison Failure indicates a discrepancy in the speed readings between the right rear wheel speed sensor and the other wheel speed sensors, suggesting a potential issue with the sensor or the vehicle's stability control system

Common causes

  • Faulty wheel speed sensor
  • Damaged wiring or connectors
  • Incorrectly installed or misaligned wheel speed sensor
  • ABS module malfunction
  • Brake system issues
  • Tire size discrepancies
  • Faulty or worn wheel bearings
  • Calibration issues after tire or wheel changes

Common misdiagnoses

  • Faulty wheel speed sensor
  • Damaged wiring or connectors
  • ABS control module failure
  • Incorrect tire size or pressure
  • Brake system issues
  • Faulty traction control system
  • Misalignment or suspension 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 Wheel Speed Sensors

  3. 3. Visually inspect the rear right wheel speed sensor for any signs of damage, corrosion, or disconnection

  4. 4. Ensure that the sensor is properly mounted and that the wiring harness is intact and free from fraying or breaks

  5. 5. Test Wheel Speed Sensor

  6. 6. Use a multimeter to test the resistance of the wheel speed sensor. Compare the readings with the specifications in the vehicle's service manual

  7. 7. If the sensor is a Hall effect type, check for proper voltage and signal output while the wheel is turned

  8. 8. Check Wiring and Connectors

  9. 9. Inspect the wiring and connectors leading to the rear right wheel speed sensor for any signs of wear, corrosion, or loose connections

  10. 10. Repair or replace any damaged wiring or connectors as necessary

  11. 11. Examine the ABS Module

  12. 12. Check the ABS control module for any faults. Sometimes, the module itself can be the source of the problem

  13. 13. Ensure that the module is receiving proper power and ground

  14. 14. Inspect Brake Components

  15. 15. Check the brake components, including the brake pads and rotors, for any issues that could affect the wheel speed sensor's operation

  16. 16. Ensure that there are no obstructions or debris that could interfere with the sensor's function

  17. 17. Clear Codes and Test Drive

  18. 18. After performing the above checks and repairs, clear the trouble codes using the OBD-II scanner

  19. 19. Take the vehicle for a test drive to see if the code reappears. Monitor the ABS and traction control systems to ensure they are functioning correctly

  20. 20. Professional Diagnosis

  21. 21. If the issue persists after performing these steps, it may be necessary to consult a professional mechanic or technician who has access to advanced diagnostic tools and equipment. By following these troubleshooting steps, you should be able to identify and resolve the issue related to the C1260 code. Always refer to the specific service manual for your vehicle for detailed procedures and specifications