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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 P1291:

Chrysler/Dodge/Jeep:

No Temp rise seen from intake heaters

Citroen/Peugeot:

Injector High Side Short To GND Or VBATT - Bank 1

Ford:

Injector High Side Short To GND Or VBATT - Bank 1

Lincoln:

Injector High Side Short To GND Or VBATT - Bank 1

Mercury:

Injector High Side Short To GND Or VBATT - Bank 1

Oldsmobile:

Injector High Side Short To GND Or VBATT - Bank 1

Plymouth:

No Temp Rise Seen From Fuel Heaters

Volkswagen/Audi:

Engine coolant temperature (ECT) sensor,ECM controlled cooling system - high input