I recently purchased an 04 545i and it is throwing codes:


P0390

P0024

P0102

P0021

P0306


Which are mainly Intake and exhaust camshaft position sensors for bank 2, MAF sensor, and cylinder 6-8 misfire. I purchased and installed both a new intake and exhaust camshaft sensor but it's still throwing the codes and idles like it has stage 3 cams. The previous owner did say that the last bit of work it had was the valve cover gaskets. My next route is to clean and/or order a MAF sensor since the vehicle hesitates on WOT. I have not done a tune up yet but that is on the near future list.


It's my first bimmer but I'm mechanically inclined so I'm not afraid of putting in the work, just need some direction. Any threads you guys know of that might help please leave the link. Feel free to ask any questions. Also the car has 215k mi on it so if there's anything else I should be replacing soon or looking out for then let me know. I plan on selling the car trouble free in a few months and putting it towards getting an F10 550 or M5 and just want it running right in the meantime.