What are generic or global OBD II codes?
Generic or global OBD II Diagnostic Trouble Codes are common for any OBD II compliant vehicle, be it Domestic, Asian or European. These codes are sometimes called “P-codes” and typically begin with “P0” or “P2”. What are enhanced or manufacturer specific OBD II codes? Enhanced or manufacturer OBD II Diagnostic Trouble Codes are unique to a vehicle of a specific year, make, model (and possibly engine size). They are assigned by the vehicle manufacturers to cover situations not already covered by a Generic DTC. These codes typically begin with “P1”. Will these Code Scanners and/or Scan Tools retrieve Anti-Lock Brake or Airbag codes? OTC Products such as the Nemisys and Genisys can be used to retrieve these codes. However, most do-it-yourself level tools retrieve Diagnostic Trouble Codes (DTCs) from the Powertrain controller (engine computer) only. Some exceptions are the OTC3111 and the Actron CP9580, which have ABS code read/erase capability for most 1996 and newer GM, Ford and Chrysler
