SAE J2534 – PassThru API

J2534 is an interface standard designed by the SAE (Society of Automotive Engineers) and commissioned by the American EPA (Environmental Protection Agency) for ve­hicle ECU reprogramming.


The standard defines a programming inter­face for hexadecimal access to dia­gnos­tic protocols and forms the uni­form com­mu­ni­ca­tion basis for re­pro­gram­ming ECUs in the vehicle.