Vehicle Trouble Codes

Most common UXXXX OBD-II codes

U0001 : High Speed CAN Communication Bus

U0002 : High Speed CAN Communication Bus Performance

U0003 : High Speed CAN Communication Bus (+) Open

U0004 : High Speed CAN Communication Bus (+) Low

U0005 : High Speed CAN Communication Bus (+) High

U0006 : High Speed CAN Communication Bus (-) Open

U0007 : High Speed CAN Communication Bus (-) Low

U0008 : High Speed CAN Communication Bus (-) High

U0009 : High Speed CAN Communication Bus (-) shorted to Bus (+)

U0010 : Medium Speed CAN Communication Bus

U0011 : Medium Speed CAN Communication Bus Performance

U0012 : Medium Speed CAN Communication Bus (+) Open

U0013 : Medium Speed CAN Communication Bus (+) Low

U0014 : Medium Speed CAN Communication Bus (+) High

U0015 : Medium Speed CAN Communication Bus (-) Open

U0016 : Medium Speed CAN Communication Bus (-) Low

U0017 : Medium Speed CAN Communication Bus (-) High

U0018 : Medium Speed CAN Communication Bus (-) shorted to Bus (+)

U0019 : Low Speed CAN Communication Bus

U0020 : Low Speed CAN Communication Bus Performance

U0021 : Low Speed CAN Communication Bus (+) Open

U0022 : Low Speed CAN Communication Bus (+) Low

U0023 : Low Speed CAN Communication Bus (+) High

U0024 : Low Speed CAN Communication Bus (-) Open

U0025 : Low Speed CAN Communication Bus (-) Low

U0026 : Low Speed CAN Communication Bus (-) High

U0027 : Low Speed CAN Communication Bus (-) shorted to Bus (+)

U0028 : Vehicle Communication Bus A

U0029 : Vehicle Communication Bus A Performance