EM58

My 2020 with 95K miles had same issue BUT I also noticed the DEF gauge wasn't correct after filling the tank it remained at less than half, as the DEF tank fuel diminished the check engine light would come on again. After driving for about 50 miles it would go off, took to preferred Diesel shop I was told that my issue was the computer needed an update. After 465.00 dollars later and driving less than 50 miles the light came back on. I'm pretty sure its my Glow Plugs and Def Tank, truck goes back first thing in the morning hopefully they can figure this thing out.