Lost Communication with Door Driver Module
The Door Driver Module has stopped transmitting on the vehicle data bus, so other control units no longer receive its messages. The driver-door module is silent; its window, lock, and mirror controls fail. Typical causes are loss of power or ground at the module, an open or shorted CAN/LIN bus wire, a connector fault, or an internal module failure.
Affected components
- Door control module
- Can bus wiring
Common causes
- High likelihood: Driver door module unpowered (often broken wires in door hinge)
- Medium likelihood: Water ingress into driver door module
- Low likelihood: Gateway module routing CAN messages incorrectly
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.