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OBDII/EOBD diagnostics trouble codes definition

If your car supports OBD II or EOBD, then you can already use almost 5000 generic OBDII codes. These codes are from PowerTrain series (P0XXX, P2XXX, P34XX), Body Series (B0XXX), Chassis series (C0XXX), Network series (U0XXX, U2XXX, U3XXX).

Also there is a list of more than 13500 additional manufacturer specific codes.

Supported manufacturers with specific OBD2 codes:


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Definition of check engine code P1284:

BMW:

Switching Solenoid for Air Assisted Injection Valves Bank 1 Control Circuit Signal Low

Citroen/Peugeot:

Aborted KOER - ICP Failure

Ford:

Aborted KOER - ICP Failure

Lincoln:

Aborted KOER - ICP Failure

Mercury:

Aborted KOER - ICP Failure

Oldsmobile:

Aborted KOER - ICP Failure

Plymouth:

Fuel Injection Pump Battery Voltage Out Of Range

Volkswagen/Audi:

Fuel Inj. Air Contr. Valve Circ. Open

Volvo:

Fuel Inj. Air Contr. Valve Circ. Open

GM:

Accelerator Pedal Position Sensor 2 Circuit Intermittent