OBD-II code · Network
U0141 Lost Communication with Body Control Module A
A second body control module (BCM "A") has dropped off the bus. Several comfort, lighting and locking functions stop working until the BCM is back online.
Is it safe to drive with U0141?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyBCM A unpowered
- PossibleCAN wiring to BCM A broken
- 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
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–6 h
- Emissions test
- Usually unaffected
- Parts involved
- Body Control Module, Can Bus Wiring
Related codes
- U0142Lost Communication with Body Control Module B
- U0143Lost Communication with Body Control Module C
- U013ELost Communication With Vacuum Sensor B
- U013FLost Communication With Pedestrian Alert Control Module
- U0140Lost Communication with Body Control Module
- U0144Lost Communication with Personalization Module "B"
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.