Hello everyone,
I bought a Ford Transit Courier Van in January 26 and I'm already having trouble with the DPF. the vehicle has 90,000km. I have no DTC anomaly and yet the DPF regenerates every 80 to 100km. I realized this because the fan was spinning often so I looked at the parameters in Forscan. Since then I've been looking for where the problem comes from and I can't find it. I have the DPF_soot % parameter which rises to 100% in 100km. I checked the egr valve and it is not clogged. I did a forced regeneration which improved the problem a little because before it was rather 60km between each regeneration.  when the dpf_soot is at 100%, the values of the exhaust sensor (1 output only, it is not a differential) display 3kpa at 2000 rpm and 5kpa at 3000 rpm which does not seem huge to me. on the other hand, the values displayed fluctuate when reading. for example when driving at 2500 revolutions on a slight climb the values constantly oscillate between 4 and 5kpa but do not remain stable? I don't know if this is normal? I also spotted an egr error parameter under forscan which often displays 99% error but I have the impression that this is not reliable, that this indicator is not necessarily to be retained if the egr command and the setpoint are consistent. I can provide Forscan screen copies if necessary. 
thank you to everyone who agrees to help me.

Welcome!

Don't know why your post is formatted difficultly?

IMHO DPF differential pressures should be about:

0 engine off (sanity check)

Around 1kPa at idle.

Max 10 kPa at 3000 rev/min.

So they appear OK?

If a regen (how do you know when it is happening?) does not result in reduced differential pressure and soot loadings then there's something wrong.

Does this have a vaporiser (likely problem area needing checking) or rely on post injection (fuel dilution, is the oil level rising)?

first of all thank you for the answer which makes me very happy.

I don't know why the message was formatted like that, I copied/pasted it from a translator, it must come from that?

I can see with car scanner on Android when the car regenerates the DPF, we see the dpf_soot% and dpf_soot max% values gradually decreasing as well as the DPF temperature which rises to 600 degrees.

after regeneration, I have the impression that the pressure drops but when the dpf_soot% reaches 100% the pressure sensor values are not huge either. When the engine stopped at 2000 rpm I was at 3kpa and at 3000 rpm I was at 5kpa which is not huge and yet the dpf_soot being at almost 100% I know that tomorrow when I go to drive it will regenerate directly. no failure during refenerations.

I admit I don't know about the vaporizer if the vehicle is equipped with it or not? I will find out. and I have never checked to see if the oil level is increasing? (would it fill with diesel?). I will look tomorrow.

yes I think I have a vaporizer because my engine looks like this picture. I assume that the vaporizer is this kind of injector above the DPF to raise the temperature. I think it works because my dpf goes up to 650 degrees memory.

I have a big doubt about the egr valve. look at the forscan screen copy we see an error of 59%.

I took it apart, it's not seized but it seems like it's not responding well to the command?