Volvo VNL W D13 P20EE00 DEF ISSUE

Good morning fellas,

I think i found the issue, there is a massive airleak from the holes that i posted above. It is coming from the dpf lower pan. here is pics. Do you guys think i can weld it or maybe get new ?

 

Update:
New flex pipe and weld on the muffler looks like fix the issue. I erase the code using my friends scanner and so far code never came back.

 

Good news. Sorry, I never saw your last post about the crack.

 

All good thanks for your effort to help anyway and hopefully this will be helpful for the next guy that has the same issue.