[Squid.nut]

Hey guys, I’ve recently replaced my dme after replacing both my alternator and battery multiple times and can’t seem to find an answer to what problems are.
I also have o2 codes i’m unable to solve but the alternators are getting costly so i’m gonna tackle that first.
I’ve had these issues for about 2 years now on and off but now they’re permanent and need to be addressed, i’ve had all fuses in the glove box tested and they’re all good, and i’ve upgraded to MSD81 as of today and the codes are still present.. i’m not too great with wiring but i’m willing to try and learn if anyone knows where i should start or has has similar issues?

Vehicle: 2008 335xi with 2010 n54