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Yes it can cause DPF issues and failed regens. See below:

https://www.fullfatrr.com/forum/topic67357.html
https://www.fullfatrr.com/forum/topic50202.html

Also don't walk past a thorough inspection, as there's a good chance there's multiple things at play:

There's a few common causes on the 4.4 TDV8, all of which are relatively inexpensive fixes:

A thorough inspection of the 4 hoses on the "donut"/air intake manifold, plus the 2x charged air hoses at the front of the engine bay is a must. As you face the engine bay, the charge hose on your right hand side heads into a metal union which joins the throttle body. Inside this union is an o-ring which collapses over time - there are some interim fixes possible, however will eventually require the whole part replacing. Here's the links:

https://www.fullfatrr.com/forum/topic55270-30.html
https://www.fullfatrr.com/forum/topic65810.html
https://www.fullfatrr.com/forum/topic64236.html
https://www.fullfatrr.com/forum/topic64236-45.html

Usual causes are:

1. Sooted up MAP sensor, which should be cleaned every few thousand miles. This is free so, try it first. Remove the engine cover and it's pretty obvious - has 1x T20 screw on it and a multiplug going to it
2. Have a good look at and around the 4x hoses on the 'donut' (inlet manifold) plus the two top charge hoses (the big rubber hoses at the front of the engine bay). Look for soot or oily deposits in their vicinity or white gunk
3. Failure of the seal inside the union between the throttle body and top left hose (a very common failure). This can be bodged with gas specification PTFE tape or the part needs replacing (£175 but takes 5 minutes to fit on the driveway with no more than a screwdriver). Look at the top left hose adjacent to the left airbox and follow it until you see a plastic fitting with a metal clip. It usually fails in this area so, you'd see sooty deposits around the fitting and on engine components nearby
4. Exhaust Gas temperature sensors down the sides of the EGR on the exhaust manifolds. P040D is a known error code of the sensor failing on the nearside exhaust manifold down the side of the engine.

Less common culprits are the temperature sensors beyond the exhaust manifolds. 2015 Range Rover Autobiography 4.4 SDV8

That's a radiator hose.

The location of the soot suggests to me to look very closely at the adjacent donut hose, the donut itself for any splits, and the throttle body union. 2015 Range Rover Autobiography 4.4 SDV8