Error code
OBD2 U0012
OBD2U0012
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Medium Speed CAN Communication Bus (Open).
Severity
highDriving may be possible but could lead to further damage or safety issues.
Summary
U0012 indicates an open circuit issue on the medium-speed CAN data bus, which is part of the car's communication network.
Common Causes
- Open circuit in the medium-speed CAN data bus
Fixes
FAQ
What does U0012 mean?
U0012 indicates an issue with the medium-speed CAN data bus, specifically an open circuit.
How serious is this code?
This is a high severity issue that could affect vehicle safety and functionality. It's recommended to address it promptly.
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)
- U0013Medium Speed CAN Communication Bus (Low)