Posts Tagged: OBDII U Code List

OBDII U Code List — Communications Network Fault Codes

OBDII U Code List Network codes begin with the letter “U” The first number in the code denotes whether the code is generic (o) or manufacturer-specific, while the last three numbers/letters define the actual trouble code 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 … Read More