OBD-II code · Network
U0149 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.
Is it safe to drive with U0149?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyDriver door module unpowered (often broken wires in door hinge)
- PossibleWater ingress into driver 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
- U0146Lost Communication with Gateway "A"
- U0147Lost Communication with Gateway "B"
- U0148Lost Communication with Body Control Module "C"
- U014ALost Communication With Battery Energy Control Module C
- U014BLost Communication With Hybrid/EV Battery Inductive Charging Module
- U014CLost Communication With Battery Energy Control Module D
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.