Idles fine but take off and it dies

[Barry68]

04 2500 5.9 212 thousand miles
Codes
P0628
P2121
P2122
Will start and idle fine until you take off and it dies

 

[Ozymandias]

Sounds like you are in for a new APPS.

But first - are your battery's in good shape, all the wiring also?

Old weak batterys can make all kinds of funny problems in our Trucks.