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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 P1688:

Chrysler/Dodge/Jeep:

Internal Fuel injection pump controller failure

Citroen/Peugeot:

Metering Oil Pump Stepping Motor Circuit Malfunction

Fiat:

Motorised throttle(2nd idle learn)

Ford:

Metering Oil Pump Stepping Motor Circuit Malfunction

Mercedes:

Metering Oil Pump Stepping Motor Cont. Circuit

Mini:

Electronic throttle control monitor level 2/3 - MAF calculation

Plymouth:

Internal Fuel Injection Pump Controller Failure