2008 Volvo 780 D16, new turbo last November. Since then, each time it rained, intermittent 5 volt code, inactive EGR differential code, inactive...
Turns out it was the injector cups and one injector. They made the necessary repairs and the truck is back on the road.
Just had Injector #7 replaced on regen system on my 2008 Volvo D16. Immediately after getting truck back the throttle had a sluggish response....