Error code
OBD2 U0026
OBD2U0026
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Low Speed CAN Communication Bus (High).
Severity
highDriving may be possible but could lead to further damage and reduced vehicle functionality.
Summary
U0026 indicates an issue with the low-speed CAN communication bus, specifically that the voltage is too high on the negative side of this data bus.
Common Causes
- Faulty or damaged wiring in the low-speed CAN network
- Corrosion at connectors affecting signal integrity
Fixes
FAQ
What does U0026 mean?
U0026 indicates a high voltage issue on the negative side of the low-speed CAN communication bus.
How serious is this code?
This is a high severity issue that can affect vehicle functionality and should be addressed promptly.
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)