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C code chassis High severity

C1268 Motor Relay # 1 Circuit Failure

The OBD2 code C1268 indicates a failure in the motor relay #1 circuit, which typically affects the operation of the vehicle's traction control or stability control systems

Definition

The OBD2 code C1268 indicates a failure in the motor relay #1 circuit, which typically affects the operation of the vehicle's traction control or stability control systems

Common causes

  • Faulty motor relay
  • Wiring issues (shorts, opens, or corrosion)
  • Poor connections or terminals
  • Failed control module
  • Blown fuse
  • Grounding issues
  • Faulty motor or actuator
  • Software or calibration issues

Common misdiagnoses

  • Faulty ABS module
  • Bad wheel speed sensors
  • Wiring issues or shorts in the circuit
  • Failed motor relay
  • Low brake fluid level
  • Faulty brake pedal switch
  • Malfunctioning powertrain control module (PCM)
  • Corroded connectors or terminals
  • Issues with the anti-lock braking system (ABS) pump
  • Battery or charging system problems

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 functioning properly

  3. 3. Inspect Fuses and Relays

    Locate the fuse box and check for any blown fuses related to the ABS or motor relay circuits

  4. 4. Inspect the motor relay itself for any signs of damage or failure. If necessary, swap it with a similar relay to test

  5. 5. Examine Wiring and Connectors

    Inspect the wiring harness and connectors associated with the motor relay for any signs of damage, corrosion, or loose connections

  6. 6. Look for frayed wires or broken connectors that could cause an intermittent connection

  7. 7. Test the Motor Relay

    Use a multimeter to test the motor relay for proper operation. Check for continuity and ensure it activates when energized

  8. 8. If the relay is faulty, replace it with a new one

  9. 9. Check the ABS Module

    If the relay and wiring are in good condition, the issue may lie within the ABS control module. Check for any fault codes stored in the ABS module using a scan tool

  10. 10. If the ABS module is suspected to be faulty, it may need to be tested or replaced

  11. 11. Inspect the Motor

    If applicable, check the motor that the relay controls for proper operation. Ensure it is not seized or damaged

  12. 12. Test the motor directly to see if it operates when powered

  13. 13. Clear Codes and Test Drive

    After performing repairs, clear the trouble codes using an OBD-II scanner

  14. 14. Take the vehicle for a test drive to see if the code reappears

  15. 15. Seek Professional Help

    If the issue persists after performing the above steps, consider seeking assistance from a qualified mechanic or technician who has experience with ABS systems. By following these troubleshooting steps, you should be able to identify and resolve the issue related to the C1268 code