Error code
OBD2 U0046
OBD2U0046
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Vehicle Communication Bus C.
Severity
highDriving may be possible but could lead to further issues. It's recommended to address this issue promptly.
Summary
U0046 indicates an issue with Vehicle Communication Bus C, which is part of the vehicle's communication network.
Common Causes
- Faulty or damaged wiring in the VAN data bus C
- Malfunctioning control module or ECU related to VAN data bus C
- Corrosion on connectors or terminals
Fixes
FAQ
What does U0046 mean?
U0046 indicates a problem with the VAN data bus C, which is part of your vehicle's communication network.
How serious is this issue?
This issue is considered high severity. It can affect multiple systems in your car and should be addressed promptly to avoid further problems.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
More OBD2 codes
- U0001High Speed CAN Communication Bus
- U0002High Speed CAN Communication Bus (Performance)
- U0003High Speed CAN Communication Bus (Open)
- U0004High Speed CAN Communication Bus (Low)
- U0005High Speed CAN Communication Bus (High)
- U0006High Speed CAN Communication Bus (Open)
- U0007High Speed CAN Communication Bus (Low)
- U0008High Speed CAN Communication Bus (High)
- U0009High Speed CAN Communication Bus (shorted to Bus)
- U0010Medium Speed CAN Communication Bus
- U0011Medium Speed CAN Communication Bus (Performance)
- U0012Medium Speed CAN Communication Bus (Open)