I know theres been a lot of discussions on this, but I really hope that somebody can help before I go totally nuts! We have a 06 Doblo 1.9 diesel multijet as one of our taxis. About a year ago we had the dreaded engine management light come on and it went into limp mode. The fault code was P2002 (diesel particulate filter). On cancelling the fault it drove fine for several weeks, but it happened again. We tried forced regeneration (running at 3000 rpm for 20 minutes) but no soot or smoke. At VAST expense we had the DPF changed about 6 months (approximately 8000 miles) ago. After just a few weeks it started playing up again in exactly the same way. Using Innova 3100 diagnostic device the same fault code came up (P2002) and was cancelled. However we continued to experience the same problem periodically. Sometimes it was fine for a few weeks and at other times the light would come on and engine would go into limp mode within half a mile. There didn’t seem to be any pattern to the periods when it either seemed fine or “died” almost immediately. During the past few weeks the light has come on and engine limp within about 1 mile of the code being cancelled. We’ve tried forced regeneration again but no joy. However, what is interesting is that we are now sometimes getting P2002 and sometimes P0238 (Turbocharger Boost Sensor A Circuit High) – sometimes both together and sometimes either one or the other by itself. Before forking out yet more exorbitant charges at our “local” (approx 50 miles round trip – we’re in the wilds of Wales!) Fiat dealer, I’m hoping that one of the clever people on this site might have some suggestions. Many thanks.

The exact same thing happened to me. The details are here on this thread: https://www.fiatforum.com/doblo/201100-engine-failure-warning-lack-power-3.html I'll never buy a DPF diesel again.

ARRRGGGGHHHHHHH! It's driving me NUTS!

you say it has DPF thus it has oil deg counter...when was oil last changed?

Westwalestaxis - Have you read my experience of this on the thread I linked? I too unnecesarily replaced a DPF (and spent a fortune on "investigation" at the Fiat dealer) on a 2006 Doblo MultiJet when a faulty turbo was the problem all along?

how can a faulty turbo be mistaken for a DPF

T14086 - Well, both myself & Westwalestaxis replaced DPFs (at vast expense following dealer advice) only to find that it made no difference as the cars returned to limp mode anyway, even when we kept resetting the fault codes with our scanners. So for us, DPF-non-regeneration was a symptom of a malfunction elsewhere; and it looks like the turbos in our 06 Multijets were the core problem. Thanks.