Error code
OBD2 U0002
OBD2U0002
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
High Speed CAN Communication Bus (Performance).
Severity
highDriving may be possible but could lead to further issues. It's recommended to address the problem promptly.
Summary
U0002 indicates a high-speed CAN communication bus performance issue or configuration error, affecting the controller area network (CAN) data bus.
Common Causes
- Faulty CAN transceiver module
- Corroded or damaged wiring harness
- Malfunctioning ECU or other control modules
Fixes
FAQ
What does U0002 mean?
U0002 indicates a high-speed CAN communication bus performance issue or configuration error, affecting the controller area network (CAN) data bus.
How do I fix U0002?
Fixing U0002 typically involves diagnosing and repairing issues with the CAN transceiver module, wiring harness, or malfunctioning control modules. 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
- 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)
- U0013Medium Speed CAN Communication Bus (Low)