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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 P1791:

Acura

A/T Concerns

Chrysler/Dodge/Jeep

ECT Level Input Circuit

Citroen/Peugeot

TP (Electric) Circuit Malfunction

Daewoo

THROTTLE OPEN DUTY FAULT

Ford

TP (Electric) Circuit Malfunction

GM

Transmission Control Module Loop

Honda

Vehicle Speed Sensor (VSS) Range / Performance Problem

Jaguar

Ignition Supply Malfunction

Kia

Ignition Supply Malfunction

Mercedes

TP (Electric) Circuit

Mitsubishi

PCM ECT level signal to TCM circuit fault

Volkswagen/Audi

Transmission Range Display Circ. Short to Ground

Volvo

Transmission Range Display Circ. Short to Ground
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