I haven't done one of these in a few months. I have seen a few that get a oil in the airline and won't regen. Pop up code p24f700. Did you do a learned data reset after changing out parts? I just change them out together now. P24f700 exhaust aftertreatment fuel air purge valve stuck closed image signs. Clean pipe from inj to ahi. Trace or just replace the line back to the regulator and look at the regulator/air dryer good. Starting regen and after 3-5 minutes when ex temp it's ~ 435 f the regen stop and coming code P24f700. Google has mostly failed me but I found a site that listed how to find it and this is where it lead me. Based on what I've been reading the fuel air purge valve is located on the inside frame on the driver side, right behind the fuel filter. Check the part number on the Hydro Carbon doser.
40% soot level is not a big deal. I gave up taking them apart to check them and the regulator. Check the fuel pressure on the AHI at the sensor. 21407621 - 14 ppi old stille (2012-2017). Start looking down stream at the temp sensors and the exhaust ducts. I did reset and calibration.
There is a temp sensor test someplace in PTT. Verify the actual temps with a heat gun or a trial sensor. The air dryer was changed about 3 months ago, so I don't suspect any water/oil plugging anything up. I have a issues with AHI module 2014 Volvo vn D13. Can somebody help me. Once it goes on its own do it a second time and watch all the numbers to see if its working o. k. I found the problem in AHI doser nosel (7 inj).... 2 different PN and it's different in 14 ppi and 17 ppi. We had this problem about 2 months ago. 45 psi seems high if I remember right. P24f700 exhaust aftertreatment fuel air purge valve stuck closed hvac talk. They look the same but are not. Anything like a leaking clamp, gasket or something that is on the DOC/DPF will cause it also. Your issue is there. Check each Cell in the batteries. If so than you found it.
7th injector was taken off and cleaned, no blockages. Truck regened with no problems for about a month after that. I have seen the regulator go bad and it reads good but after a couple of minuets the air pressure fluctuates and it stops.! Truck will not regen. So you put an outside air source on it to 40psi and it worked?
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