I have a 2016 Ram Diesel Promaster 2500. The van has been in the shop aprrox 4 times because the check engine light pops on with the P20EE code SCR NOx Catayst Efficiency Below Threshold Bank 1. The dealer has replaced the cat, new particulate filter and new sensors and code keeps coming up? any ideas??
If you make all easy decisions in life, (short cuts) you will have to go back and do it again. Makes for a hard lifestyle, If you make a hard decision (longer path) but better result, you won't have to go back and do it again, making a easy lifestyle in the feature