OBD-II code · Network
U0050 Vehicle Communication Bus E (+) Open
The plus line of vehicle bus E (often a secondary safety or chassis CAN) is open. Loss of this segment usually disables related convenience or chassis features.
Is it safe to drive with U0050?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyBus-E high wire broken
- 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
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–5 h
- Emissions test
- Usually unaffected
- Parts involved
- Can High Wire
Related codes
- U0031Vehicle Communication Bus C (+) Open
- U0039Vehicle Communication Bus B (+) Open
- U0042Vehicle Communication Bus D (+) Open
- U0048Vehicle Communication Bus C (+) Open
- U0057Vehicle Communication Bus D (+) Open
- U0060Vehicle Communication Bus F (+) Open
- U0066Vehicle Communication Bus E (+) Open
- U0078Vehicle Communication Bus B (+) Open
- U008BVehicle Communication Bus G (+) Open
- U0094Vehicle Communication Bus H (+) Open
- U0047Vehicle Communication Bus C Performance
- U0049Vehicle Communication Bus C (+) Low
- U0051Vehicle Communication Bus C (-) Open
- U0052Vehicle Communication Bus C (-) Low
- U0053Vehicle Communication Bus C (-) High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.