That was one of the codes I found a leaking seal on the fuel heater. But I'm going to take the advice and clean all components. I put new injectors in at 190,000
It's a 2006 with 240,000 I've never replaced the fan clutch. It has had different codes p007 and it also pulled one for an egr . I know the temp gauge could be off up to 20%. It only gets real hot and throw codes when trailering on hot days
I have a 2006 gmc LBZ. My motor is getting over 230 degrees in hot weather and while I'm towing. It also throws a code and loses power when I go over 63mph. Towing 8000lbs