As we speak i m going through the same thing. I have two custom steeda tunes. This is driving me crazy. Trying to get a resolution now.
Innovative tunes are junk. Get custom. They aren t unless u go there in person
Limp mode. Basically stock. I got it all day yesterday in all tunes. It was raining too. Truck ran like crap.
Nope just downloaded from extreme diesel down to performance and driven it for about two days and back up. After this incident it only happened again about a year later. Switch to innovative diesel tunes. Thats my recommendation.
Did you ever fix this problem? My buddys truck just threw the same codes and wont start