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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 P1866:

Citroen/Peugeot:

Transmission Transfer Case System Concern - Servicing Required

Daewoo:

EDS 5 DRV CRCT OPEN

Ford:

Transmission Transfer Case System Concern - Servicing Required

GM:

Torque Converter Clutch (TCC) Pulse Width Modulation (PWM) Solenoid Control Circuit Low Voltage

Lincoln:

Transmission Transfer Case System Concern - Servicing Required

Mercury:

Transmission Transfer Case System Concern - Servicing Required

Oldsmobile:

Transmission Transfer Case System Concern - Servicing Required

Volkswagen/Audi:

Data Bus Powertrain Missing messages

Volvo:

Data Bus Powertrain Missing messages