Error code
OBD2 U0045
OBD2U0045
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Vehicle Communication Bus B (shorted to Bus B).
Severity
severeDriving may be unsafe due to potential communication issues with critical systems.
Summary
U0045 indicates that there is an electrical short between the negative (-) and positive (+) sides of Vehicle Communication Bus B, which can disrupt communication within the vehicle's network.
Common Causes
- Electrical short in the VAN data bus B
- Faulty wiring or connectors on Bus B
Fixes
FAQ
What does U0045 mean?
U0045 indicates a short circuit in the VAN data bus B, which can affect communication between vehicle systems.
How do I fix U0045?
Fixing U0045 typically involves identifying and repairing the faulty wiring or connectors on Bus B. Professional diagnosis is recommended.
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)