I've had this happen a couple of times. But it's not consistent. I looked on Cummins Quik serve but I really couldn't find these codes. I've had that ECM power fault once before and when they put new chassis batteries in that seemed to fix that. But now it's back again along with his EGR issue I don't know if that's just a sensor or I have some bad power going to the ECM again. Any ideas?