Error code
OBD2 U0005
OBD2U0005
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
High Speed CAN Communication Bus (High).
Severity
severeDriving may be possible but could lead to further issues if not addressed.
Summary
U0005 indicates an issue with the high-speed Controller Area Network (CAN) data bus voltage being too high, which affects communication between various vehicle control modules.
Common Causes
- High resistance or open circuit in the CAN high-speed bus wiring
- Faulty power supply to the CAN network
- Corrosion or damage on connectors and terminals
Fixes
FAQ
What does U0005 mean?
U0005 indicates a problem with the high-speed CAN data bus voltage being too high, affecting communication between vehicle modules.
How do I fix U0005?
Fixing U0005 typically involves diagnosing and repairing issues related to the CAN network wiring or power supply. Specific steps depend on identifying the exact cause of the high voltage issue.
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)
- 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)