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C1249 ABS Outlet Valve Coil RR Circuit Short To Ground

The OBD2 code C1249 indicates a short circuit to ground in the ABS outlet valve coil for the right rear wheel, which can affect the operation of the anti-lock braking system

Definition

The OBD2 code C1249 indicates a short circuit to ground in the ABS outlet valve coil for the right rear wheel, which can affect the operation of the anti-lock braking system

Common causes

  • Damaged wiring or connectors
  • Shorted ABS outlet valve coil
  • Faulty ABS control module
  • Corroded or loose electrical connections
  • Water intrusion or moisture in the circuit
  • Grounding issues in the ABS system

Common misdiagnoses

  • Faulty ABS control module
  • Damaged wiring or connectors
  • Faulty wheel speed sensor
  • Incorrectly installed or defective ABS pump
  • Shorted or damaged harness
  • Faulty brake pedal position sensor
  • Issues with the power supply to the ABS system
  • Faulty relay or fuse related to the ABS system

Troubleshooting steps

  1. 1. Verify the Code

    Use an OBD-II scanner to confirm the presence of the C1249 code. Clear the code and see if it returns after a short drive

  2. 2. Visual Inspection

    Inspect the wiring and connectors related to the ABS outlet valve coil for the right rear wheel. Look for

  3. 3. Damaged, frayed, or corroded wires

  4. 4. Loose or corroded connectors

  5. 5. Signs of moisture or dirt ingress

  6. 6. Check the ABS Module

    Inspect the ABS control module for any signs of damage or corrosion. Ensure that all connections are secure

  7. 7. Test the Outlet Valve Coil

    Disconnect the connector from the right rear ABS outlet valve coil

  8. 8. Use a multimeter to measure the resistance of the coil. Compare the reading to the manufacturer's specifications. If the resistance is too low or zero, the coil may be shorted

  9. 9. Check for Short to Ground

    With the connector still disconnected, use a multimeter to check for continuity between the coil's positive terminal and ground. If there is continuity, there is a short to ground somewhere in the wiring

  10. 10. Inspect the Wiring Harness

    Trace the wiring from the ABS outlet valve coil back to the ABS module. Look for any areas where the wiring may be pinched, chafed, or damaged

  11. 11. Check for Other Codes

    Look for any other related trouble codes that may provide additional context or indicate a broader issue with the ABS system

  12. 12. Repair or Replace Components

    If you find damaged wiring or a faulty outlet valve coil, repair or replace the affected components as necessary

  13. 13. Recheck the System

    After making repairs, reconnect everything and clear the codes. Test drive the vehicle to see if the C1249 code returns

  14. 14. Professional Help

    If you are unable to resolve the issue, consider seeking help from a professional mechanic or an automotive technician with experience in ABS systems. By following these steps, you should be able to diagnose and potentially resolve the issue related to the C1249 code