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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 P1668:

Chrysler/Dodge/Jeep:

ETC TPS 1 x 4 Performance - ECU Internal

Citroen/Peugeot:

PCM - IDM Communications Error

Ford:

PCM - IDM Communications Error

Lincoln:

PCM - IDM Communications Error

Mercury:

PCM - IDM Communications Error

Oldsmobile:

PCM - IDM Communications Error

Toyota:

VSV for AICV Circuit Malfunction

Volkswagen/Audi:

Injector 3 - current circuit