Error code
OBD2 U0038
OBD2U0038
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Vehicle Communication Bus B (Performance).
Severity
highDrive cautiously and seek repair immediately to avoid further issues.
Summary
U0038 indicates a performance issue with Vehicle Communication Bus B, which is part of the VAN data bus system in your car.
Common Causes
- Faulty communication between modules on Bus B
- Malfunctioning control module
Fixes
FAQ
How can I diagnose U0038?
Consult a professional mechanic or use diagnostic tools like Torque Pro for detailed analysis.
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)