Earlis
New Member
- Apr 2, 2020
- 1
- 0
- Truck Year
- 2015
I just got my first diesel truck last week and it's a eco. My check engine low came on saying def system. I didn't even know what it was. After allot of searching I found what it was and that it was very low. After finding out how important that fuel is I'm so glade I got some. Now it's full but the check engine light still on. Im rather new to this technology any ideas what could still be causing it to be on?