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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 P1621:

Chrysler/Dodge/Jeep:

5V Output Reference Voltage 1

Citroen/Peugeot:

Control Module Long Term Memory Performance/ Immobilizer Code Words Do Not Match

Daewoo:

FUEL CUT VALVE MAL

Ford:

Control Module Long Term Memory Performance/ Immobilizer Code Words Do Not Match

GM:

Control Module Long Term Memory Performance

Jaguar:

Engine control module engine immobilization input circuit malfunction

Land Rover:

Serial Data Link Dead Fault

Mazda:

lmmobilizer System Fault

Mercedes:

Immobilizer Code Words Do Not Match

Opel:

Engine control module (ECM) - defective

Saab:

Internal Control Module Malfunction

Saturn:

PCM / Memory Data / Serial Data Error

Volkswagen/Audi:

Engine coolant temperature signal short to ground

Volvo:

Engine coolant temperature signal short to ground