Count me as another with catalytic converters issues. Love the mini van in almost every way but driving down highway with about 2500 miles on my new 2018 and check engine light came on. No other indicators were out of line but by the time I could safely pull over my engine completely stalled and I had a burning smell. Dealer says itís the cat converter (and ACC SW?) issue. There are many ways this could have been better handled by Chrysler (like doing the fix that they knew about before I actually picked up the vehicle or at least notifying me of the need or issue). Doing nothing was about the only way to screw this up. Very disappointing and potentially dangerous. Pretty bummed and hope these fixes are legit and lasting.
Assuming you have a hybrid, you are a victim of Chrysler's mishandling of this known issue. The cruise control recall, otherwise known as the U73 recall, was issued at the end of May and the fix was issued in mid June. It contained a bad update to the power train control module (PCM). On August 17 Chrysler discovered this and issued a stop order for the U73 recall, telling dealers to cancel appointments for customers that wanted to have the recall work done. About a week later they lifted the stop order and at the end of August issued this Rapid Response Transmittal (RRT) number 18-087: https://www.dropbox.com/s/4ulfaiynxk...20RRT.pdf?dl=0
So they knew that any vehicle that had the U73 recall done before August 17 was operating with faulty PCM software. The fix to this was published as an emissions control RRT bulletin, not a safety recall, despite the fact that it could damage the catalytic converters and thereby cause a loss of power. Some have even had their catalytic converters get so hot that other nearby components caught fire. The thing about RRT bulletins is that there is no mechanism to notify owners of their existence. Many of the dealers don't know about this one either, so they will sell you a vehicle that had the U73 fix applied before August 17 and that has not subsequently had the RRT 18-087 fix applied. And this situation continues to this day, six weeks after the RRT bulletin was issued.
So if your vehicle was manufactured before August 31 and had the U73 update applied either at the factory or at the dealer before August 31, it is was caught up in this mess.
I would suggest filing a complaint with the NHTSA. You can do this online at https://www-odi.nhtsa.dot.gov/VehicleComplaint
. There are rumors that there are enough complaints that the NHTSA is might start an investigation and force Chrysler to reissue this as a safety recall, so I suggest you add your voice to the chorus.