I completely agree with you, its a scary thing to pull out in traffic, and then the truck decides that its time to take a nap with traffic coming up your ass. No pun intended... The biggest issue is that you don't know when its going to happen, I can just imagine FCA stating "you pulled in front...
From what I have read, there are a lot of issues that can cause this code to come up. I had it the other day and was scheduled to take the truck to the dealer, went on a 100 mile road trip and the code disappeared. I assume that it was some type of crap on a sensor to the DEF system.
Other...
Since the "reprogram" my fuel mileage has gone to S--T and now I will try these fixes... if they don't work, I may be moving back to a gasoline fueled vehicle with its associated problems.
Gregastro