P1206. Fiat Doblo. Failed forced regeneration

[Ronthedob]

It's a long, long story!

The very shortened version is:

A few years ago error code P1206.

A lot of reading up, research, checking forums and asking friends about how to fix this.

Error code comes up, I do something (mostly by replacement), a forced regen and then clear the error code. Back on the road for a few months maybe a year then P1206 returns and I have to find some other thing to do which might fix it, and so on.

This is what I've done:

Made a few graphs using MES

Changed the oil and reset the oil counter.

Replaced:

DPF pressure sensor
EGR valve
DPF
MAP sensor

The latest was replacement of the thermostat and engine temperature sensor.

BUT THIS TIME

The regen failed and it won't do it.

So, over to you knowledgeable folk.
What is going on?
What on earth have I got to do to fix
1) The P1206 problem
2) Getting the forced regen done so that I can see if this was the cause of the error code.

Any help much appreciated.

Ron

2006 1.9 Multijet

[Cristocea]

hello... I am also facing the situation described by you on a fiat sedici 1.9... same error, forced regeneration from the tester failed.
Did you somehow manage to resolve the situation?
I ran out of ideas...
Thank you