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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 P1664:

Fiat

Repeat throttle angle [over max. value]

GM

1-4 Upshift Lamp Control Circuit

Saab

Shift Up Output Signal From Control Module Malfunction

Volkswagen/Audi

Injector,activation - current circuit
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