Solid Red Engine & wrench in triangle ( NO codes)

[AJMFreight]

To be completely honest, I’m not sure exactly what I should be looking at/ for. When running regen / operating normal idle, everything looks normal, doesn’t seem like there are any outrageous or super low numbers. If you don’t mind, is there somewhere or something I should look for ? Truck sounds runs and seems perfectly fine, just annoying lights and constant beeping noise once truck is on, no engine light flashing or anything.