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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 P1594:

BMW:

B Camshaft Position Actuator Control Open Circuit Bank 2

Chrysler/Dodge/Jeep:

Charging system voltage too high

Plymouth:

Charging System Voltage Too High

Porsche:

Intake Manifold Length Tuning 2

Ford:

FORCED ENGINE SHUTDOWN - REMOTE START SYSTEM FAULT, NO UNATTENDED VEHICLE TIMEOUT

Subaru:

Automatic transmission diagnosis input signal circuit malfunction