Help with code 28A0 on N55

[ASquared]

Im getting the code 28A0 “intake pipe absolute pressure, plausibility: pressure too high” and looking for some troubleshooting help. I’m also getting a 2820 shadow code, “absolute pressure sensor, intake pipe”. I’ve already taken off my chargepipe, throttle body, and MAP sensor to clean. Don’t see any cracks or anything obvious and still having no luck. Truck starts fine but idles rough. Code points to possible MAP or throttle body malfunction....anybody experience this before? Also found something about the evap purge valve could be faulty, but don’t know if it would throw this code specifically. I have a friend coming with Rheingold to reset some adaptations to see if that helps anything. Any help in the meantime would be appreciated.