Z19DTH turns, but doesn’t start

A hello to the group, my convertible from 2006, doesn’t want to start, I have two errors inside, but they can be deleted and come back after some time. Ehps c1550 37 and cim b3981 00, which I still noticed particle filter 104 percent, adjustment for drallklappe of course defective.. Does someone know what to change, so it starts at least once. I just bought it, but already in this condition. Compression is also ok. Control for timing belts fits, battery is in and Okay, nice Monday.