My '13 did the same thing as the OP and kept throwing code after code and "Drive to Clean". After several trips to the dealer over 8 weeks, the turbo vanes were discovered to have been stuck which allowed too much soot into the EGR cooler, cooler core and the DPF. I was in regen every 80 miles unloaded. A new turbo, cooler and core and all was well.
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2020 Montana 3790RD Legacy EditionOnan, TST TPMS, TrailAir pin, Discs,
2013 F350 DRW 4x4 CC LBViair 10007, Ride-Rites, Westin HDx, 12k Smittybilt
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