Been reading the error code… 😮

Meal, today my old workmates visited, because my new job there is almost around the corner. In doing so, leads the Volvo and how that is so… Sabbel, sabble, and bang was the box with those in the workshop and the diagnostic plug was plugged in What do I have to read on the protocol???? – error code 121: air mass meter function faulty – error code 314: cam wave sensor signal incorrect – error code 535: charging pressure control valve signal incorrect Now my question: I recently converted to a larger torbocharger, installed a larger LLK, etc… Date for the software is after tomorrow, so please not a nice hint this is correct. During the conversion action, of course everything was apart (also valve cover, cam waves out due to valve shaft seals) and for that all possible plugs were pulled and partly also, while ignition was still on. So can these errors come therefore? Or do I actually have to replace a few parts? I can not judge the latch of the T5 at present, because I did not fit into the suction range, but to say that there was a lot of time.