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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 P1531:

Alfa Romeo

AC compressor clutch relay - circuit malfunction

BMW

B Camshaft Position Actuator Control Open Circuit Bank 1

Citroen/Peugeot

Invalid Test - Accelerator Pedal Movement

Fiat

A/C compressor relay

Ford

Invalid Test - Accelerator Pedal Movement

GM

A/C Low Side Temperature Sensor Fault

Lincoln

Invalid Test - Accelerator Pedal Movement

Mercury

Invalid Test - Accelerator Pedal Movement

Oldsmobile

Invalid Test - Accelerator Pedal Movement

Porsche

Camshaft Adjustment Bank 1

Saab

Pedal Position Sensor 1 & 2 Circuit Adapted Sum Out Of Range

Volkswagen/Audi

Camshaft Control Circuit open

Volvo

Camshaft Control Circuit open
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