OBD-II code · Network
U0199 Lost Communication with Door Control Module
The Door Control Module has stopped transmitting on the vehicle data bus, so other control units no longer receive its messages. A door control 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.
Is it safe to drive with U0199?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyDoor module unpowered (often broken wires in door hinge)
- PossibleWater ingress into door module
- Less likelyGateway module routing CAN messages incorrectly
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
- 1–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Door Control Module, Can Bus Wiring
Related codes
- U0196Lost Communication with Rear Seat Entertainment Control Module
- U0197Lost Communication with Hands-Free Phone Control Module
- U0198Lost Communication with Telematic Control Module
- U019ALost Communication With Tachograph Module
- U019BLost Communication With Battery Charger Control Module A
- U019CLost Communication With Glow Plug Control Module 2
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.