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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 P1686:

Acura:

A/T FI Signal B Low Input

Chrysler/Dodge/Jeep:

No SKIM (Smart Key Immobilizer Module) bus message received

Citroen/Peugeot:

Metering Oil Pump Stepping Motor Circuit Malfunction

Fiat:

TP adjustment self adaptive [signal implausible]

Ford:

Metering Oil Pump Stepping Motor Circuit Malfunction

GM:

Driver 5 Line 6

Honda:

A/T FI Signal B Circuit Low Voltage

Mercedes:

Metering Oil Pump Stepping Motor Cont. Circuit

Mini:

Electronic throttle control monitor level 2/3 - , APP sensor diagnostic error

Plymouth:

No SKIM Bus Message Received

Volkswagen/Audi:

Contr. Unit Error Programming Error

Volvo:

Contr. Unit Error Programming Error