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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 P1644:

Chrysler/Dodge/Jeep:

Incorrect Variant/Configuration

Citroen/Peugeot:

Fuel Pump Speed Control Circuit Malfunction

Ford:

Fuel Pump Speed Control Circuit Malfunction

GM:

Traction Control Delivered Torque Output Circuit

Honda:

MOTFSA Signal Malfunction

Lincoln:

Fuel Pump Speed Control Circuit Malfunction

Mercedes:

Transmission version can't be checked due to low voltage at transmission ECU

Mercury:

Fuel Pump Speed Control Circuit Malfunction

Oldsmobile:

Fuel Pump Speed Control Circuit Malfunction

Volkswagen/Audi:

Please check DTC Memory of clutch ECU

Volvo:

Please check DTC Memory of clutch ECU