Lost Communication with Door Control Module Front Passenger
The body controller has lost the front passenger door module. Window, lock, mirror and door light functions on this door stop responding.
Affected components
- Door control module
- Door harness
Common causes
- High likelihood: Door harness broken in hinge
- Low likelihood: Gateway module routing CAN messages incorrectly
- Low likelihood: CAN terminating resistor (120 Ω) drifted out of spec
Possible symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.