2011 RAM 5500 Aisin trans.

It is new to me. I got the truck with these codes (below): It runs and drives fine, just sluggish acceleration, but the turbo is stuck in 1 position, no Exhaust brake, no low rpm boost.

P0102 Mass Airflow sensor A circuit low
P0405 EGR Position Sensor circuit low
P049d EGR Position exceeded learning limit
P2509 ECM/PCM Power Input Signal intermittent
P2bacNOX Exceedance - Deactivation of EGR
U0101 Lost comm with TCM
U010c U010C-LOST COMMUNICATION WITH TURBOCHARGER/SUPERCHARGER CONTROL MODULE

What have I done? Verified fuses 21 and 37.

Waiting for better weather to continue following the U010c Factory document.

Any ideas would be great as a direction to go.