Detroit 14L 60 Series Regen issues

hello,
i am having severe issues with my detroit 14L. DDL code is Soot level most severe level. After Forced regen starts it would get to about 450 deg DPF inlet , and 460 outlet. engine temp 185. doser valve never comes on, engine shutdowns. I installed a brand new DPF filter, Temp, and pressure sensors. still same issue.
one thing I noticed my EGR Delta pressure is always at 0?
my EGR does work, i see at 99% when engine running.
Another thing that might be related is in DDl i click to EGR delta pressure sensor calibration. this fails it says
"Calibration failed, sensor failed.
when i go to information menu in DDL and find EGR Delta Pressure- Description is: Position of FMU, see image

 

thank you for the reply. Yes i reset the maintenance hour counter and input new DPF serial number. i did purge the doser valve, and see that it is working.

 

So this is 2009 1st Gen aftertretmaaft. No DEF system . Yes I am talking about doser valve. In DDL you can go to option then select purge doser valve. I performed it and success full passed.

 

No I have not cleaned the diesel oxitation catalyst.

 

The only fault code is the one for soot level at most severe. No other codes. I'm just asking about the EGR because I tried to calibrate the EGR under options . It could not complete the process because what I posted on my original thread