Door Module Fault
Communications error with the door 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 vehicle can't communicate properly with the door module, which controls locks, window functions, and other door-related features.
What the computer is actually seeing
The body control module (BCM) is unable to receive signals from the door module, which could mean it's faulty, disconnected, or has a bad connection.
What a healthy reading looks like
Door module should respond to signals from the BCM within 50 milliseconds at a voltage of around 12 volts.
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 door wiring and connectors for damage or corrosion. Repair as necessary. Decision point: Are all connections clean and secure? If yes, proceed. If no, fix them and retest.
- 22. Check the door module power and ground circuits while the key is in the ON position. Expected voltage should be around 12V. Decision point: Is voltage present? If yes, proceed. If no, trace the circuit back to look for faults.
- 33. Perform a continuity test on the communication wires between BCM and the door module. Decision point: Is continuity present? If yes, proceed. If no, repair wiring as needed.
- 44. If no problems are found, consider swapping the door module with a known good unit. Decision point: Did the fault code clear? If yes, the module was the issue. If no, check BCM for faults.
Common causes
- Faulty door module
- Corroded or broken wiring
- Poor connectors
- BCM issues
- Software glitches
Typical repair cost
$100 - $300
Related codes
Frequently asked questions
Is it safe to drive with this code?
Yes, the vehicle is still drivable, but you may lose door functionalities like locking or window controls.
Will the problem return after fixing it?
If the root cause is addressed (wiring, connectors, or module), it should not return.
Why do I see related codes with this one?
Related codes indicate issues with other components in the same circuit or system that can affect the door module's function.
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