I'm located in Tartu, Estonia. If anyone around here is willing to help, it would be great!
hi, i had a dpf problem on my 2018 159 2.4 jtdm. the following worked for me.
1- get a elm interface, they are cheap and very uselfull
2- download the free version of multiscan (fiatecuscan)
3. take the dpf out and clean it very well with high pressure water, an ordinary hp cleaner won't work as you need "volume "of water washing out the soot. My dpf had 4 holes drilled into it, about 20cm into the core, and i bought the car 2 years old from a Alfa dealer with warranty etc.... makes you think. However i don't believe drilling into it.
4. take it for a drive with diagnostics hooked up, it will show % clogging, differential pressure and more. you will be able to see it once it starts to regenerate while hooked up and driving, take a buddy along :-)
5. don't be alarmed if it shows over 100% clogging, it can happen, make a note of the DP at idle to see improvement.
6. if it starts regen check your boost gauge very carefully, under normal conditions it will drop slowly once you lift your foot but drop VERY quickly if in regen mode
7. dpf cleaner chemical at local stores seems to work for me
this was quite a nightmare if you wanted to eg overtake and thing goes limp.
My car regens around 370 - 450 km intervals, i reset trip b after every regen so i know more or less when it needs it. I do a lot of high distance travel and it was odd to see the dpf failing me. anyway car now on 220k km and no further problems with the dpf, but i keep my eye on it.
Also it will regen anytime it things it has to, not only open road or so, in town as well, you may hear the cooling fans come up and harsh idle, even heat if you know your car. Good luck