So today I installed a brand new quad Adrenaline v2 with iQuad I drove the truck for 3+ hours with no issue with pedal response.. later on in the day while driving the volt gauge bottomed out. I pulled over looked over everything and it all appeared fine. I went a few places with shutting the truck off and starting back with no issue. I get home truck sits for 1+ hours I go out to install the egt probe after getting required bit and tap. I start the truck to a CEL I pay no mind as I idle into the garage. After I install the egt probe I start the truck and  go to give it throttle with no response I check the DTCs to find the P0223 I follow mopar mans diagnostic with no luck. 

Any input would be greatly appreciated! It’s a Timbo apps replaced sept. 2019

Did your volt gauge ever come back up?

Yea it did once I shut it off

check grounds and terminals on batteries for cleanliness. start there.