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C1246 ABS Outlet Valve Coil RR Circuit Failure

The OBD2 code C1246 indicates a failure in the rear right outlet valve coil circuit of the ABS (Anti-lock Braking System), which may affect the operation of the ABS system

Definition

The OBD2 code C1246 indicates a failure in the rear right outlet valve coil circuit of the ABS (Anti-lock Braking System), which may affect the operation of the ABS system

Common causes

  • Faulty ABS outlet valve coil
  • Damaged wiring or connectors
  • Short circuit in the circuit
  • Open circuit in the circuit
  • Corrosion or poor connections
  • Failed ABS control module
  • Low brake fluid level
  • Faulty brake pedal position sensor

Common misdiagnoses

  • Faulty ABS module
  • Damaged wiring or connectors
  • Faulty wheel speed sensor
  • Brake fluid contamination
  • Incorrectly installed or defective ABS pump
  • Faulty relay or fuse related to the ABS system
  • Issues with the brake pedal position sensor

Troubleshooting steps

  1. 1. Check the Vehicle's Battery and Charging System

    Ensure the battery is fully charged and in good condition

  2. 2. Check the alternator output to ensure it is providing adequate voltage

  3. 3. Inspect ABS Fuse and Relays

    Locate the ABS fuse in the fuse box and check for continuity. Replace if blown

  4. 4. Check the ABS relay for proper operation

  5. 5. Visual Inspection of Wiring and Connectors

    Inspect the wiring harness and connectors leading to the ABS module and the right rear outlet valve coil

  6. 6. Look for signs of damage, corrosion, or loose connections

  7. 7. Test the ABS Outlet Valve Coil

    Use a multimeter to measure the resistance of the right rear outlet valve coil. Compare the reading to the manufacturer’s specifications

  8. 8. If the resistance is out of spec, the coil may be faulty and require replacement

  9. 9. Check for Short Circuits or Open Circuits

    Use a multimeter to check for continuity in the wiring to the outlet valve coil

  10. 10. Look for any short circuits to ground or open circuits that could be causing the failure

  11. 11. Scan for Additional Codes

    Use an OBD-II scanner to check for any other related trouble codes that may provide more context to the issue

  12. 12. Address any additional codes before focusing solely on C1246

  13. 13. Inspect the ABS Module

    If all other components check out, the ABS control module may be at fault

  14. 14. Check for any software updates or recalls related to the ABS module

  15. 15. Perform a System Reset

    After addressing any issues found, clear the trouble codes using an OBD-II scanner

  16. 16. Test drive the vehicle to see if the code returns

  17. 17. Consult Repair Manual or Technical Service Bulletins (TSBs)

    Refer to the vehicle’s repair manual for specific diagnostic procedures related to the ABS system

  18. 18. Check for any TSBs that may address known issues with the ABS system for your vehicle make and model

  19. 19. Seek Professional Help

    If the issue persists after performing these steps, consider consulting a professional mechanic or an automotive technician with experience in ABS systems. By following these steps, you should be able to identify the cause of the C1246 code and take appropriate action to resolve the issue