1998.5 Dodge cummins 5.9
 

My Dodge will die when it gets warm. Its starts fine, idles fine and runs until it gets warm. The truck then cuts out and dies. I have replaced the fuel pump, TPS, checked all wiring. All the gauges work, battery does not drain down, ac works etc. Could this be an ECM issue and how will I know this?
The code reader did throw a couple of codes being,, P1693, P0122.
Thank You for any advice or help.