I have the same problem and am having to replace the injector pump and lift pump. The truck has only 76k miles. This to me is unbelievable. Turn your key on and off three times, and you should get a code in the milage box. You can call the dealer and see what it means.
I was getting loss of power as well I think my problem could be water because after another truck driver told me to pump the foot pedal it stared to get power back but when at idle sounds good temp good gets power loses right away pump fuel pedal then power and turbo boost back