OK having read the EPA NOV (Notice of Violation), will try to get the link to show here no "cut & paste" option, the EPA alleges 8 AECD's, emission control defeat conditions.
1. Full EGR shut-off at highway speed.
2. Reduced EGR with increasing vehicle speed (acceleration)
3. EGR shut-off for exhaust valve cleaning.
4. DEF dosing disablement during SCR adaptation.
5. EGR reduction due to modeled engine temperatures
6. SCR catalyst warm-up disablement
7. Alternative SCR dosing modes.
8. Use of load governor to delay ammonia refill of SCR catalyst.
The EPA describes 4 combinations of these programing situations which increases NOX emissions. Which is the basis for the continued witch hunt for the programing that VW used. Each of the violations noted is actually a procedural error in that FCA did not originally state a reason or justification for making these programing parameters. Or, as EPA states, the ECM does not compensate for the EGR shut down with more control measure activation's. To EPA's credit they do state that FCA has responded with notification that item #1 has been addressed with a Field Fix in 2014 and is no longer present in 2015 and up programing. Which leads me to believe the EPA may be using a dated vehicle, as the testing described is contained in a report dated September 25, 2015. As a automotive mechanic I can make an argument for each of 2 thru 8 programing to facilitate engine longevity, I do not know why FCA engineers can not do so also.
I have tried to place the link onto this post and it is obvious that my 3yr. old granddaughter is probably the one to do that but I can't seem to pry her away from today's episode of Mickeys Play House, so if any would like to view the NOV in it's entirety go to
www.epa.gov and search for RAM JEEP ecodiesel Violation press release. Once you have the press release it contains a link to the actual complaint.
Sorry for the long post. It just aggravates me that this whole matter can be resolved both administratively, with explanations for the conditions and a single Flash Program. Which would not damage the "Brand" or more importantly kick the Consumer in the testicles. FCA or RAM should first and foremost consider the CONSUMER which has PURCHASED their product.
