2018 transit with repeat p2463 p246c

[Steve Mutter]

I am fighting this transit, it has set p2463 p246c 3 times now. Another tech in my shop had it first, he replaced the egr cooler, egr valve chasing p0401. Then i got it, I cleaned the map sensor port and put new maf sensor, I have fixed the p0401 code but after around 2000 kms it will put the check engine light on and give the exhaust overloaded warning. The driver said that it did not given any warning just out of the blue. Just to note this truck has the manual region function and they know how to use it other wise. I performed the pinpoint tests and manual regenerations. Performed a parameter re set on the dpf and sent it on its way. Came back with the same codes, I tested the dpf injector and it made 20ml during the test. I replaced the def performed re sets and was just told today that its coming back, made it another 2000kms. Anyone run into something like this ?