Automotive cummins 2015 6.7L in a ram

[RickatGL]

Ok, so I got the go ahead, current issue is my insite 7 9.0 cant connect to the ecm through the obd ii port. However I do have a old obd ii scanner and I got the current codes which is a p003A. Basically out of of parameter. Possible stuck vanes, actuator is not the problem, because when I road test the truck makes almost 30 psi boost. It is not steady like a truck engine. Seems to bounce around from 25-28 under heavy throttle.
Tail pipe is soot free 98%. I swiped it with my fingers and it has a very light off grey color, barely made my fingers dirty just shiny.
Maybe I'm wrong let me know, that's why I like rawze. Provides the matter of fact information you need to hear or what you need to do.
I need to get more involved in the repairs only outsource what I cant handle. Even then I need to know why it's going in beforehand to prevent this shop scam trend.