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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 P1678:

Acura:

Traction Control System FI Data Line Failure

Chrysler/Dodge/Jeep:

ECU Sensor Adjusment Required

Honda:

FPTDR Signal Line Failure

Volkswagen/Audi:

Drive by Wire - MIL Circ. Short to Ground

Volvo:

Drive by Wire - MIL Circ. Short to Ground

Ford:

LOW OIL PRESSURE LAMP CONTROL CIRCUIT