DVohs3

I had mine done 2 weeks ago and about 400 miles. Not too many highway miles. My CEL hasn’t come back on yet. What kind of miles were the 40?

I had this same problem with mine too. About 750 miles and it came on. It used a half tank of def in that time period too. Has anyone else had the extreme def usage too? UPDATE: Took my truck to the dealership and they said that there was a recall (tsb) for the def system. They reset the check engine light and flashed the ecm with an updated software. I’ll do another update if it comes back or if it stays off for a month or so.

I had this same problem with mine too. About 750 miles and it came on. It used a half tank of def in that time period too. Has anyone else had the extreme def usage too?