Fechter, nice to hear from you. OK, I turn on the display, and the sensor lights up- after the initial pass by the spoke magnet, it goes out, but then doesn't come back on after the magnet moves on. In other words, does a half a blink (goes from on to off) and stays out. I just returned from a wonderful 10 mile round trip through the apple orchards of San Juan Bautista, and the bike operated great, except for the cut out after exactly 5 minutes of riding. This "5 minute cutout" is consistent and happens like clockwork, almost as if the hardwiring of the controller is intending it to do so. Whether this is a warning, a slow burnout, or a fluke, I don't know, but I do have 200 miles on this fantastic machine, and ride everyday, so I'll keep you posted. (this incident, error code happened after mile 185. By the way, nothing extraordinary has happened during my rides. I typically, draw about 10-15 amps on the flats, and 20-27 amps on the steep hills, on a 42T Bling Ring chainring, and a 11-34T Sunrace rear cassette. I only use the 4 highest gears. My chainline is perfectly matched up to the 4th gear, and my 1st gear has never tripped the chain, even tho the chainline is 3 cogs away from the chainline. The motor does get warm to warm-hot on the steepest hills, but my daily ride has only 4 or 5 block-long steep hills. See, this Bafang software seems to have plenty of bugs in it, and no where to go to find out why, yes?