Hows it going Xpost?
I am new to this site but at all to BMW's! Ive owned an e30, e36, e46, e92, e85, and an e86.
I was previously an automotive mechanic and now I am a jet engine technician, so I have a large amount of knowledge when it comes to cars. but this time I've been stumped and could use some help!

So I picked up my 2010 x5 Msport at about 6k under blue book because it was at a dodge dealership and it had a check engine light.
so I get these two codes. p0012 and p1434
I've been doing a ton of research on this problem.
I've seen that it can be an intake cam sensor. so i order two of them and replace both of them. no luck
I saw someone have the incorrect oil which caused the vanos to freak out.
I got oem bmw oil and filter from ecs. no luck
Next step was to replace the vanos solenoids. I ordered two of them from getbmwparts.com. installed them. surprise surprise. no luck..

When I clear the code, start the car and drive, no MIL. but as soon as I shut the car off and restart it, the light comes right back on with both codes

I have ran out of solutions at this point.
I am reading online that the p1434 code is for the secondary air pump, i don't believe that the air pump would be causing a p0012 code, so i haven't bothered replacing that yet.

It runs fine and drives fine as well.

does anyone have any suggestions?
Thanks in advance for any help!