OBD-II code · Network
U0010 Medium Speed CAN Communication Bus
A fault on the medium-speed CAN bus has been detected. This bus (typically 125 kbit/s) connects body and comfort modules — BCM, climate, doors, infotainment. A failure usually disables comfort functions but leaves the powertrain operational.
Is it safe to drive with U0010?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyMS-CAN line shorted to supply or ground
- PossibleOne failing comfort module pulling the bus down
- 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
- 1–6 h
- Emissions test
- Usually unaffected
- Parts involved
- Can Bus Wiring, Body Control Module
Related codes
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.