My 2019 RAM 1500 V8 5.7 HEMI OVERHEATED AND NOW WON'T START

[Dr.habsi]

The coolant pipe went out while on traffic and there was coolant all over the place and I drove for 15 minutes to reach the nearby mechanic. I switched off the car and fixed the pipe and new coolant added. Now the car will not start. No cracking sound even like the starter went silent. We checked for codes but nothing clear. My mechanic believes it's some kind of safety computer shutdown and we may need an expensive update.. May or may not work.. Any better ideas.. Appreciate any advice.

 

[Bamadj]

Having a similar issue now on my 2021 Ram 2500. I got the over temp and decreased power almost simultaneously. I’m getting codes P0129, P0652, and P2127 and it won’t start. I have replaced thermostat and water pump then filled with new coolant. I have checked all applicable fuses, cleaned electric connections for sensors, tried to reset by disconnecting the battery, but still getting same codes and no start. Any ideas other than replacing sensors then the ECM?