Chaca Chaca Choo choo

[JimT]

I had that same issue with regens leading up to my demandate. Stop engine light due to high scr inlet temps, bluish-white smoke from the exhaust (with a heavy fuel smell and film coating everything behind my weed burner exhaust) due to the DPF temps not climbing high enough to ignite the aftertreatment fuel properly. Looking back it was most likely the DOC needing replacement coupled with the dpf injector getting clogged up with soot.

Can't say for certain the exact reasons for his trouble, but the scenario is all too familiar.