I was out at the track today and something happend that didnt feel right. Well turns out that my car threw some CELs. I am getting the following codes:
P115D
P115C
P2B5B
P2B5C

the first 2 are with the MAF. the 2nd 2 I havnt been able to find anywhere. anyone run into these?

 

I have run into the P2B5B code recently. After installing an Alta accessport and running higher boost, my MAF sensor throws the code after reaching 15.5 psi for a few seconds. Only thing I can think of (after checking intercooler and turbo hose connections) is that the MAF is 1 bar and I accurately reads the flow upwards of such pressure. Hence, throwing a code and cutting boost.

 

You figure out this 2B5B code? I got it this morning ... after hitting 15psi momentarily as well..