- Joined
- Dec 19, 2019
- Messages
- 656
- RV Year
- 2016
- RV Make
- Newmar
- RV Model
- Dutch Star
- RV Length
- 37
- TOW/TOAD
- 2021 Willys
Did you check for codes? If it persists, check the LBCU (or your code reader if you have one) and post the codes of any. High NOX can mean insufficient DEF making it through the system.
When I called freightliner they didn't seem concerned. Not sure if I got a bad batch of DEF at the last fuel stop.