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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 P1731:

Chrysler/Dodge/Jeep:

Incorrect Gear Engaged

Citroen/Peugeot:

1-2 Shift Malfunction

Daewoo:

FRT SPEED SNSR INPUT SIG HIGH

Ford:

1-2 Shift Malfunction

Honda:

Problem in Shift Control System: Shift Solenoid Valve E Stuck ON,or Shift Valve E Stuck,or A/T Clutch Pressure Control Solenoid Valve A Stuck OFF

Jaguar:

Inconsistent Gear Ratio

Kia:

Inconsistent Gear Ratio

Lincoln:

1-2 Shift Malfunction

Mercury:

1-2 Shift Malfunction

Oldsmobile:

1-2 Shift Malfunction

GM:

Retarder Circuit Low