Error code
OBD2 U0022
OBD2U0022
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Low Speed CAN Communication Bus (Low).
Severity
moderateCan drive, but may experience intermittent issues with systems relying on the low-speed CAN bus.
Summary
U0022 indicates low voltage on the Low Speed CAN Communication Bus (+) line, which is part of the Controller Area Network (CAN) data bus system in vehicles.
Common Causes
- Loose or corroded connectors
- Faulty wiring harness
- Defective module connected to the low-speed CAN network
Fixes
FAQ
What does U0022 mean?
U0022 indicates a low voltage issue on the Low Speed CAN Communication Bus (+) line, which can affect communication between vehicle modules.
How do I fix U0022?
Fixing U0022 typically involves checking and repairing connections or wiring related to the low-speed CAN bus. Specific steps depend on identifying the exact cause of the 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)
- 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)