Cummins X15 after treatment issues

[Envirotec]

Unfortunately the answer to every question is NEVER!

In regards to fuel pump, I am looking for someone to test if the pump is actually bad and maybe repair? From what I’ve been told, these newer pumps can’t be tested?? The oldest truck is a 2018 and newest is a 2024. Anyways, super appreciative of the feedback!!!! Been pulling my hair out for the last 2 years with mechanic issues!! I will also try and take some photos off INSITE when I can. Any particular screens you would like to see? Again, I’m no expert myself so pretty new to INSITE and other programs.