Unable to Get VIN Number response from OBD-2 Device

Question

I need to fetch VIN number from car\'s controller using plxKiwi-2 wifi obd2 device. I am getting other information like car rpm,speed,throttle position,etc. in correct forma

Answer 1

There is no mistake. You send the command "09 02" and the ECU replies with a positive response "49 ...". Indeed, it is strange that instead of getting the real vin you receive "0xFF...", but this is normal for Hyundai cars. I have seen this before in Hyundai vehicles - response with all bytes "0xFF".