Door Lock/Unlock Motor Failure

The computer is seeing that the door lock or unlock motor isn't responding when it tries to signal it, which usually means the motor is stuck or broken.

When the vehicle's Body Control Module (BCM) sends a signal to the door lock motor, it expects a reaction within a few milliseconds. If it doesn’t see this reaction or if the voltage returns off-spec (less than 9 volts or more than 15 volts), it triggers this code.

Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.

1. 11. Check the vehicle battery voltage; it should be between 12.4 to 12.6 volts with the engine off. If low, charge/replace the battery.
2. 22. Inspect wiring and connectors to the door lock motor for damage, corrosion, or loose connections.
3. 33. Use a multimeter to test for voltage at the door lock motor connector while activating the lock/unlock switch. Expect to see 9-15 volts.
4. 44. If voltage is present and the motor does not operate, replace the door lock/unlock motor. If no voltage, check for issues at the BCM.
5. 55. If the motor is replaced and the code returns, consider testing or replacing the BCM.

• Faulty door lock/unlock motor
• Damaged wiring or poor connections
• Faulty Body Control Module (BCM)
• Low battery voltage or poor ground connections

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