[BradleyD]

Just bought a n55 2011 335i. Used to have an n52. The codes above are what where on the car, I checked the charge pipe and all looks fine. I cleaned the MAF, and still no power. I can hear the turbo but I feel like I’m in my old n52. I did find some oil in the oil pressure sensor and I dried it up but still no change. I’m completely lost as I have no experience with boost at all. Car also has a rough cold start but not once it’s warm. No clue what to do and I just want to feel the 300hp I thought I was buying lmao.

[NZE90]

You need to scan it with better software. Those fault descriptions are wildly inaccurate.

[BradleyD]

Got it. Thanks

[NZE90]

I think the 3429 fault is referring to the oil pressure control valve, not the oil pressure switch, but you won't know for sure until you scan it with something better like ISTA.

[TunafishE93]

Codes are pointing to boost leak. Make sure charge pipe is not cracked and connection are tight.