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Fault Codes
Each character position has a meaning. For example, a code of PO171 indicates a generic power train code in the Emission Management System. Code 71 in this sub-system indicates System too Lean.
For a full explanation of each code, refer to http://www.obd-codes.com/trouble_codes/.
|
Character |
Description |
Values |
|
1 – System |
Identifies the vehicle system related to the trouble code |
· P = Power Train · B = Body · C = Chassis · U = Undefined |
|
2 – Code Type |
Identifies the code as generic (OBD-II standard), or manufacturer specific. |
· 0 = Generic · 1 = Enhanced (manufacturer specific) |
|
3 – Sub-System |
Denotes the type of sub-system that pertains to the code. These are the Power Train sub systems |
· 1 = Emission Management · 2 = Injector Circuit (Fuel or Air) · 3 = Ignition or Misfire · 4 = Emission Control · 5 = Vehicle Speed & Idle Control · 6 = Computer & Output Circuit · 7 = Transmission · 8 = Transmission · 9 = SAE Reserved · 0 = SAE Reserved |
|
4,5 – Code |
Indicates the specific abnormality reported. |
00 - 99 |