Yes @ darrylrobert is right, my add on check valve blast out the fuel line. Later one website said this kind of one way valve only can apply to return fuel system. Do do this. It could cause big accident catch fire and burn the car

I had a similar issue with my iCarsoft Vol2 reader after 6 months of usage.
In my case is the SD card inside was gone. New SD card with the software flashed and works perfect now for years.
regards Markus