Powered Down Now message with wrench?
New to diesel world. I was pulling my 35ft 5ver back from the mountains of NC with coming up the last long grade and I got the "powered down now" with the wrench symbol. The truck did the whole limp mode thing when this happened. I got it to a truck stop and turned it off to search for the problem and when I started it back up it was cleared and ran fine till I got 5 miles from home when it did it again. I have also noticed that my lie meter on the fuel avererage has gone from 12.8 to 8.8 with truck empty. Any ideas?