OBD-II code · Network
U0218 Lost Communication with Door Control Module Rear Passenger
The body controller has lost the rear passenger door module. Window, lock and child-lock functions on this door stop responding.
Is it safe to drive with U0218?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyDoor harness broken in hinge
- Less likelyGateway module routing CAN messages incorrectly
- Less likelyCAN terminating resistor (120 Ω) drifted out of spec
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
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Door Control Module, Door Harness
Related codes
- U0215Lost Communication with Door Control Module Front Driver
- U0216Lost Communication with Door Control Module Front Passenger
- U0217Lost Communication with Door Control Module Rear Driver
- U0219Lost Communication with Liftgate/Decklid Control Module
- U0220Lost Communication with Door Control Module D
- U0221Lost Communication with Door Control Module E
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.