TSB 17-0021 my have solved your problem along with previous changes to the ECU incorporated into the version of IDS used to update your truck.

03/17/17 Transmission and Drivetrain NHTSA ID: 10095623
TSB ID: TSB 17-0021

Some 2015-2016 f-super duty pickup vehicles equipped with a 6.7l engine may exhibit an illuminated malfunction indicator lamp (mil) with dtcs p2002, p2201, p2459, p2463 and/or p246c. reprogram the powertrain control module (pcm) to the late

 

Did not receive a copy of TSB 17-0021. Codes shown on his scan were P2463 and P246C. He ran Oasis and found the above TSB and ran it to reprogram the PCM. Build date on my truck was april of 2014, and I purchased the truck around Jan 29 of 2015.
Had similiar regen problems in Aug of 2015 between my start in Steamboat Springs, Co, thru Breckenridge,Co to Colorado Springs. I posted on problem after returning home to Texas. Problems occurred after leaving Breckenridge and before reaching Colorado Springs. Hot, high altitude, same error codes, messages. Fix then from Col Springs dealer was to drive without trailer on I25 for about 50 + miles until the truck started a regen and then finished. No other incidents until this year between Aug 19 to 21 return trip from Canada to Texas. I hope this TSB fixes the problem. The frequent regens on 20th and 21st really killed the gas mileage and really put a damper on what prior to this was a really memorable vacation. Now my Wife only wants to know if the REGEN problem is fixed. I tell her I hope so.

 

Tell you what, that pass was a hell of a pull. Truck never hiccupped or anything pulled strong all the way up and tow hauled all the way down. I did see the highest EGT I've seen on the way up. I glanced up and saw 1160 on the Edge read out. I don't recall one any higher even in my deleted 6.4L.