Technical Ducato 2.2 2009. Fault code P0090

[Jooon]

Hello

Got a Ducato 2009 2.2 with a P0090 and I'm going crazy soon. Requested fuel pressure is 250 bar and it howers around 500 bar on idle. On revs it seams to be able to keep up and regulate.

Swaped just about everything related to it. Fuel pressure sensors, regulator and even the presure relife valve. Nothing has helped. I also unpluged the return line and feed it to a bucket but the pressure stayed the same. Other than faulty ECU I'm at los what it can be? Faulty new part?

Faulty new regulator? When is it supossed to bypass fuel, powred or unpowered? It at least activates when you force it with the tester.

 

[Kahcorp]

2009 will be a 2.3
What issue do you have as you indicate it revs which means it must start ok.
Fuel pressure should be 350 to 400 during startup

 

[Jooon]

2009 will be a 2.3
What issue do you have as you indicate it revs which means it must start ok.
Fuel pressure should be 350 to 400 during startup

It will not pass inspection with the P0090 code, returns instantly after it has ben cleared. and as said. at ide it sits at around 500 with desired at 250


2.2 ford engine, at least that what comes back on every damn paper,

 

[Kahcorp]

I didn't think they used those engines in 2009.
That fault should clear itself if there is no issue.
As you say everything is good so it must be intermittent. You will need to do a data read to see what is going on. Maybe wiring or connector with a bit of corrosion.
Intermittent faults are very frustrating as you have found out.