AU Ford Ranger MY19, Engine Bay Exhaust Leak - EGR Regen Cycle?

[AnueXRanger]

Hello All.

Australian Ford Ranger member here with a ?DPF/EGR problem

2019 XLT 2.0L BiTurbo DieselBrief History:- Engine replaced (warranty) at 45,000km due to a Ford servicing error that resulted in an engine failure..
Currently has 56,XXX km

Problem;
Intermittently, the engine blows exhaust smoke from the engine bay every few hundred km. this is intermittent, and almost like when it's doing some kind of DPF 'regen' cycle or similar. The engine idles higher during this time, but after about a minute or two, the engine idle drops and the smoke no longer appears.
It is booked in for service again on Monday, but since ford was "unable to find" any issue last time, I wonder if anyone else had a similar problem/issue. I suspect its some kind of EGR sensor/valve etc, as it only happens infrequently. Can anyone point me towards a manual to where these sensors are so I can also check myself?

See video from two different times it's happened.
- https://photos.app.goo.gl/DyiCNJjY8pmzr3CB7
- https://photos.app.goo.gl/A7GzjmbxWhf3B1eBA
- https://photos.app.goo.gl/iGiqiY6JBtoKagreA (Engine startup, you can see a small puff)

Any thoughts?

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[tentspast]

Hi Benjamin, sorry I can't help with your issue although it does remind me of the blowback vapour I used to get out of my FG Falcon turbo which had a catch can vented to atmosphere. Perhaps a PCV recirculation problem?
Just a quick question though, do you notice any increased engine noise in the cab when this happens? I have a weird problem with my Ranger where the engine noise has suddenly become really noticeable, almost like there's a bad exhaust leak or a hole in the firewall, it was in at the dealer all day and they couldn't find a thing. Just curious if it might be something to do with EGR.