Right Rear Door Module Communication Error
The right rear door module is not communicating properly with the vehicle's network.
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 computer expects to see data from the right rear door module, but it's not getting anything back, which could mean a wiring problem or a failed module.
What the computer is actually seeing
The body control module (BCM) doesn't receive the expected signal from the right rear door module, often reading as inactive or constant low voltage (below 0.5 volts).
What a healthy reading looks like
Expect a signal voltage between 2.5 to 5.0 volts when the door module is operating correctly.
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.
- 1Inspect wiring and connectors leading to the right rear door module for corrosion or damage.
- 2Check for continuity on the power and ground wires to the module with the key in the ON position. Expected continuity less than 5 ohms.
- 3Using a scan tool, monitor the data from the right rear door module. Is it communicating? If no, proceed to the next step.
- 4Disconnect the right rear door module and check the voltage at the connector pins (looking for the input voltage). Should be approximately 12 volts. If not, trace power supply issues.
- 5If power and ground are good, replace the right rear door module and recheck for communication.
Common causes
- Faulty right rear door module
- Damaged wiring or connectors to the door module
- Corrosion or poor connection at module terminals
- Failed communication between modules due to a fault in the network
Typical repair cost
$$$
Related codes
Frequently asked questions
Can I drive the vehicle with this code?
Yes, you can drive the vehicle but the right rear door functions may not work properly until fixed.
Will this code come back after I fix it?
If the issue is truly resolved and the proper connections are made, the code should clear and not return.
Why does this code sometimes come with other door module codes?
Other codes may relate to similar communication issues or power problems affecting multiple modules.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
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