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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 P1507:

BMW:

Idle-Speed Control Valve Opening Solenoid Control Circuit Signal Low

Citroen/Peugeot:

Idle Air Control Underspeed Error

Daewoo:

MPS - RANGE / PERFORMANCE MAL

Ford:

Idle Air Control Underspeed Error

Jaguar:

Idle Air Control System RPM Higher Than Expected - B Bank

Lincoln:

Idle Air Control Under Speed Error

Mazda:

Idle Air Control System Underspeed Detected

Mercedes:

IAC system underspeed detected during self test

Mercury:

Idle Air Control Under Speed Error

Oldsmobile:

Idle Air Control Under Speed Error

Volkswagen/Audi:

Idle Sys. Learned Value Lower Limit Attained

Volvo:

Idle Sys. Learned Value Lower Limit Attained

GM:

Starter Relay Circuit High

Subaru:

Idle Control System Malfunction (Fail Safe)