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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 P1722:

Chrysler/Dodge/Jeep:

Line Pressure Low (old)

Citroen/Peugeot:

Gear 2 Incorrect Ratio

Daewoo:

CONTROL RELAY - PERFORMANCE

Fiat:

Idle Increase Signal to Engine ECU

Ford:

Gear 2 Incorrect Ratio

Jaguar:

Stall Speed

Kia:

Stall Speed

Lincoln:

Gear 2 Incorrect Ratio

Mercedes:

Gear 2 Incorrect Ratio

Mercury:

Gear 2 Incorrect Ratio

Oldsmobile:

Gear 2 Incorrect Ratio

GM:

Manual Selector Valve Controlled Clutch Not Engaged

Subaru:

Auto Trans Diagnosis Input Signal High Input