Join Date: Mar 2010
Feedback Score: 0 reviews
A couple of things. I am hoping you meant 6.7L diesel! Second, what is the code the CEL is throwing? Third, if you are driving with no DEF, that is what is causing the CEL, most likely. When mine threw a code a few months back, it was low on DEF, but not as low as it has been in previous years. I took it to the dealer, who like you, could not look at it before I needed it for a trip. But I got some DEF (two jugs, at Wal-Mart, 5 gallons total), and ended up putting in one full jug (2.5 gallons), and about 3/4 of the other jug. Initially, the CEL did not go away, but after another stop, the CEL was gone when I started the truck again. And it has been fine since.
If you have no DEF, and it is indeed a 6.7L diesel, don't take chances. Get the DEF filled.
2011 6.7L PSD XLT - Dead and gone
2019 6.7L PSD XLT - Still too new!
2010 Wildcat 28RKBS 5er