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I am doing research on CAN BUS and CAN Protocol. I want to know that, does each car model has different pinout on OBDII port? Or Is it same on all cars?

P.S. If it differs, is there a database for it?

Anar Mansurov
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Wikipedia to the rescue:

OBD-II is an improvement over OBD-I in both capability and standardization. The OBD-II standard specifies the type of diagnostic connector and its pinout, the electrical signalling protocols available, and the messaging format.

FRob
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