DPF problems

[Ronnie4447]

Hey Guys it's been a while, I have bought a 2011 KW with a 2250, replaced 2 injectors (Trim Coded) replaced AFT fuel pressure sensor still have a 1926 active. I haven't did region yet it was late when I got done. Question is it would not get hot enough to do a regen injectors were replaced. Is that the problem or do I need to look further? Soot level shows a 5 Do I need to go ahead and pull filter and clean? and I'm being told you can wash them out rather than baking or do I buy a new one. Cummins History shows DPF filter 6/13 but no mileage or what was actually done. I know nothing about the truck other than the desk shows 808000 miles and 25000 hrs. Trying to get it on the road. Thanks in advance