Error code
OBD2 U0029
OBD2U0029
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Vehicle Communication Bus A (Performance).
Severity
highDriving may be possible but could lead to further issues. It's recommended to address this issue promptly.
Summary
U0029 indicates a performance issue with Vehicle Communication Bus A, which is part of the VAN (Vehicle Area Network) data bus. This code suggests there's an issue affecting communication between vehicle systems.
Common Causes
- Faulty or damaged wiring in the VAN data bus
- Malfunctioning control module or ECU
- Loose, corroded, or disconnected connectors
Fixes
FAQ
What does U0029 mean?
U0029 indicates a performance problem with the VAN data bus A, which is crucial for communication between vehicle systems.
How serious is this code?
This is a high severity issue. While driving may be possible, it could lead to further problems and should be addressed 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)
- U0012Medium Speed CAN Communication Bus (Open)