Error code
OBD2 U0066
OBD2U0066
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Vehicle Communication Bus E (Open).
Severity
severeDriving may be possible but could lead to further damage and safety issues.
Summary
U0066 indicates an open circuit in the Vehicle Area Network (VAN) data bus E (+), which is part of the communication system between different modules in the car.
Common Causes
- Open circuit in VAN data bus E (+)
- Faulty connectors or wiring related to VAN data bus E (+)
Fixes
FAQ
What does U0066 mean?
U0066 indicates an open circuit in the VAN data bus E (+), which is part of the vehicle's communication network.
How do I fix U0066?
Fixing U0066 typically involves identifying and repairing any faulty wiring or connectors related to the VAN data bus E (+).
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)