My sister has a 14 Eco and her check engine light just came on. Code P20EE. "Nitrogen in catalyst in bank 1 is below threshold." Same problem with the dealer pushing her appointment out a week.
Has there been any resolution on this trouble code? I did find the following TSB on WK2jeeps.com:
I also did some uncle google searching and many with the same issue had to have the DEF injector, DEF pump and even the Catalytic converter replaced.