p0089 error - engine cuts out intermittently

2008 Fiat Ducato 3.0 160 multijet

I've been having a problem with engine warning light coming on and engine stalling. I used an odb to get a code and it throws up p0089 referring to the fuel pressure regulator but not sure that the issue.

Symptoms I had recently. Drove full length of M50 no problem, parked up overnight. Drove back through the city the next day and it started to stall when I'd stop at lights. Restart, drive to next lights and cuts out again. Also have had it cut out randomly turning a corner. That's pretty much what happens each time.

A friend suggested it could be the tank pump which I changed, no good. Someone else mentioned checking and cleaning the throttle body which I haven't tried yet. The fuel pressure regulator would be another option but I wanted to check if anyone else out there has had a similar problem before I start spending on more parts.

Thanks for any advice.
Tom

That age of Sevel vehicles have a known issue of water ingress in the engine bay which causes problems.
Two most common failures is solenoids which control EGR function and the throttle bodies.
The EGR valves themselves can stick open which can manifest itself by stalling and if severe will cause starting issues.

I had the exact same problem with my Volvo S40 1.9D (Renault engine). The root cause was a faulty fuel pressure sensor after it was changed the problem went away.
https://www.ebay.co.uk/itm/BOS…4130832155

Thanks all for the replies. Plenty to keep me occupied there!

Definitely think the water ingress is the root of all the problems. Had to replace ECU, fusebox recently as well as service so filters etc. were all replaced at that stage.
One other symptom that I notice is when I reset the codes and start up, it idles normally. Drive until the issue happens as described, and then it idles at a little higher revs then drops back to normal.