2007 S R56, no mods currently installed.

Originally had a 2885 (Boost Deviation Plausibility Error) code. I replaced 2 MAP sensors for inlet and temp because there was oil on them.
That code went away after replacing those MAP sensors, but then 3 more appeared: P129E, P0107, P1255.

Kind of the same situation as this, except I wasn't replacing the turbo or dv.
I was also told by a mechanic it could be the ECU or a broken wire, however in his scenario it was a MAP sensor, which I already replaced.

How could I check the ECU or narrow this problem down further?

 

Most likely a non OEM sensor since a different code appeared. Will follow up once I get a new one for the manifold.

 

For anyone looking at this thread in the future, I was able to solve my problem by getting a real OEM sensor.

I had gone in for repair work and for some reason they replaced this sensor, it was working fine before so I really don't understand what they were up to but I'm never going back...

Also here's a link to a pretty cheap one ($40) https://www.pelicanparts.com/More_In...-7-540-508-M14

Hope this helps someone.