Error code
OBD2 U0027
OBD2U0027
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Low Speed CAN Communication Bus (shorted to Bus).
Severity
severeDriving may be unsafe due to potential electrical issues. It is recommended not to drive until the issue is resolved.
Summary
U0027 indicates a short circuit in the low-speed CAN communication bus, specifically where the negative (-) line is shorted to the positive (+) data bus. This issue affects the Controller Area Network (CAN) data bus.
Common Causes
- Short circuit between the negative and positive lines of the low-speed CAN bus
Fixes
FAQ
What does U0027 mean?
U0027 indicates a short circuit in the low-speed CAN communication bus, specifically where the negative (-) line is shorted to the positive (+) data bus.
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)