Error code
OBD2 U0030
OBD2U0030
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Vehicle Communication Bus A (Open).
Severity
severeDriving may be unsafe due to potential loss of communication between vehicle systems.
Summary
U0030 indicates an open circuit in Vehicle Area Network (VAN) data bus A, which is part of the communication system between different parts of the car.
Common Causes
- Open circuit in VAN data bus A (+)
- Faulty connectors or wiring harness
Fixes
FAQ
What does U0030 mean?
U0030 indicates an issue with the VAN data bus A (+) circuit, which is part of the vehicle's communication network.
How do I fix U0030?
Fixing U0030 typically involves identifying and repairing any open circuits or faulty connectors in the VAN data bus A (+).
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)