Harley Davidson Night Train Bj.2007 goes out during the ride.

Hello everybody, I have a problem again. I will describe it to you briefly. So I drive about 20 – 30 minutes then it happens for the first time. If I was e.g. at a traffic light or otherwise deep-touring and now want to give gas it goes out. If I then idle in and start it immediately again and I can drive a few km until it happens again. I also turned on the turn signal to see if it has electricity. Has it and everything except that it is off. The timings when si e is starting to get shorter and shorter. Today I was able to drive just a few hundred meters at the end before it goes out again. The funny thing is that it starts up again immediately and I can drive a bit again. As said the track gets shorter and shorter. At home I read out the errors about the speedometer times. It was the errors P1353 and P1356 deposited. So P1353 Front Cylinder No Combustion EFI Front cylinders without sparks and P1356 Rear Cylinder No Combustion EFI Hinterer Zylinde r without ignition. Has anyone had this and can help me? In advance thanks Frank