Appendix A - Understanding Dtcs - Actron ABS BrakeScan CP9449 User Manual

Appendix A – Understanding DTCs
Diagnostic Trouble Code (DTC) Formats
DTCs are used to help determine the cause of a problem or problems with a
vehicle.
OBD II Format Codes
❒
OBD II DTCs consist of a five-digit alphanumeric code.
❒
The DTCs format and general code types are shown below.
❒
ABS Codes are typically chassis (Cxxxx) codes.
Within each category (Powertrain, Chassis, Body and Network) of DTCs there
are assigned ranges for different vehicle systems.
Bx - Body
Cx - Chassis
Px - Powertrain
Ux - Network Comm.
x = 0, 1, 2 or 3
Example:
P0101 - Mass or Volume Air Flow Circuit Range/Performance Problem
Powertrain Codes
P0xxx - Generic (SAE)
P1xxx - Manufacturer Specific
P2xxx - Generic (SAE)
P30xx-P33xx - Manufacturer Spe-
cific
P34xx-P39xx - Generic (SAE)
Chassis Codes
C0xxx - Generic (SAE)
C1xxx - Manufacturer Specific
C2xxx - Manufacturer Specific
C3xxx - Generic (SAE)
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • A – 1
C0023
Left Front Whe el
Spe ed Sensor Circuit
Malfunction
Current
C 0 1 0 1
1 of 3
ABS
MIL Code
Specific Fault Designation
Vehicle Specific System
Body Codes
B0xxx - Generic (SAE)
B1xxx - Manufacturer Specific
B2xxx - Manufacturer Specific
B3xxx - Generic (SAE)
Network Communication
Codes
U0xxx - Generic (SAE)
U1xxx - Manufacturer Specific
U2xxx - Manufacturer Specific
U3xxx - Generic (SAE)
A