C0265 - EBCM MOTOR RELAY CIRCUIT LOW WHEN ON

POST UPDATED IN November, 2021

Description of DTC code C0265 Generic

The Anti-lock Braking System (ABS) has a relay, which sends voltage from the battery to the control solenoids. The solenoids are activated from the Electronic Brake Control Module (EBCM) microprocessor.

The solenoid coils have on their low side a feedback circuit to the controller microprocessor. When the solenoid receives the command to be activated, the feedback voltage is low, but when this is turned off, the feedback voltage will be higher.

The C0265 OBDII fault code setting indicates that the Electronic Brake Control Module motor relay circuit has experienced a performance failure.

Symptoms of fault code C0265 Generic

  • The Check Engine lamp lights up.
  • A light turns on from the Anti-lock wheel system to indicate a bad performance of the system.
  • It is not possible to use the ABS functions.

Causes of OBD2 C0265 Generic

Reasons to set the C0265 OBD2 diagnostic code:

  • The wiring of the Electronic Brake Control Module may be faulty, causing a short or open circuit.
  • Circuit voltages may be inconsistent due to poorly adjusted connectors.
  • The EBCM may be damaged.

Possible solutions of the DTC code C0265 Generic

To solve the OBDII DTC C0265, take into these suggestions:

  • Consult the TSBs.
  • Check the Electronic Brake Control Module cables for damage such as wear or corrosion. In either case, make the appropriate repairs or replacements.
  • Check the electrical connections of the circuit. If you detect high levels of corrosion or bent pins, make the necessary adjustments.
  • Perform electrical checks on the control circuit of the Electronic Brake Control Module. The voltages obtained in these tests should be compared with those indicated in the specifications. If you find some inconsistencies, make the necessary repairs.

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