FOUR CODE FAMILIES
Start with the system.
Use the complete scanner display and vehicle context when choosing a reference.
P CODES
Powertrain
Engine, transmission and powertrain diagnostic references. Exact vehicle and module context still matters.
9,891 references
B CODES
Body
Body-system diagnostic references. Confirm the reporting module and vehicle-specific definition.
189 references
C CODES
Chassis
Chassis-system diagnostic references. Read the vehicle warnings before deciding whether to continue.
478 references
U CODES
Network
Communication and network diagnostic references. A communication code does not identify a failed module by itself.
1,228 references