coming home from work last week my '03, 6.0 powerstroke shut down & wouldn't refire. only drove it to work because I was working on my ranger, the powerstroke is for trailering,camping & the occasional mud slingin'. the truck has ARP studs, egr delete, & cold air intake. just over 80k miles. pulled these codes- p0401- egr flow insufficient, p0603- int. cont. module keep alive memory malf.- p132b- turbo supercharger boost cont. A performance- p2290-inj. cont. press. too low. I was hoping to find help on where to start. got an oil drip on front of engine now too. any pointers?