Door Lock Control Module Communication Error
There's a communication issue with the door lock control module.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The door lock control module isn't talking to the rest of the car properly, which can lead to issues locking or unlocking the doors remotely or automatically.
What the computer is actually seeing
The body control module (BCM) expects to receive a signal from the door lock control module within a specific time frame. If it fails to receive this signal, it triggers a fault code.
What a healthy reading looks like
BCM should receive a valid signal (e.g., digital pulse signal between 0 and 5 volts) from the door lock module within 200 milliseconds.
Guided diagnostic — the DiagCoach way
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.
- 11. Inspect all wiring and connectors related to the door lock control module for damage or corrosion. Decision: Are the connections secure and free of damage? If no, repair or replace as needed. If yes, proceed to next step.
- 22. Check the voltage at the door lock control module. It should be between 0-5 volts during operation. Decision: Is the voltage present and steady? If no, repair wiring or replace the BCM. If yes, proceed to next step.
- 33. Use a scan tool to check for any additional codes that may provide more context. Decision: Are there related fault codes present? If yes, address those issues first. If no, proceed to next step.
- 44. If wiring and signals are fine, consider reprogramming or updating the BCM if applicable. Decision: Did reprogramming resolve the issue? If yes, the problem is fixed. If no, the door lock control module may need replacement.
Common causes
- Faulty door lock control module
- Wiring issues or short circuits
- Corroded or loose connectors
- Software glitch in the BCM
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code active?
Yes, the vehicle is generally drivable, but you may experience issues with the door locks.
Will this problem come back after a repair?
If the underlying issue is fixed, it shouldn't return, but keep an eye on the door lock operation.
Why does this code appear with another code?
These codes can often be related, as a single issue may affect multiple modules and their communication.
Working a real vehicle right now?
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