Car mechanic help needed please!

[womble]

I have a 2003 Picasso and it has a fault come up on the electronic thingy, so I bought a gizmo that showed the error code and it says it's p0090, which translates as "Fuel Pressure Regulator 1 Control Circuit"

Any ideas what the problem may be?

Please don't let it be bad, as the van just cost me £350

[sisize]

I'm a technician, firstly is it petrol or diesel and are you having any other symptoms or is it just a engine light coming on ?, also it could be a simple fault as the engine codes that come on can just be a symptom rather than the cause, so could be a fuel filter partially blocked causing pressure to drop which is in turn logging a fault

Sisize

[womble]

Thank Sisze, it's a 2l diesel, no other symptoms, seems to be the same as normal, I'm not sure when the fuel filter was last changed.
I cancelled the fault on the car, but the Mrs is out in it tonight, so I'm not sure if it has come up again.

[sisize]

I would keep an eye on it and if its comes up again change the fuel filter first but if it drives fine and has no other symptoms I wouldn't be too concerned tbh, sometimes if the fault is intermittent its best to monitor it to see if it develops as it gets expensive trying to get to the bottom of some faults that occur every now and then


Sisize

[womble]

Thankyou so much, I might change the fuel filter anyway if it's a relatively easy job, we did consider changing the car recently, but worked out we couldn't really afford it, to get something that does a better mpg, so we are stuck with this I think for the foreseeable.

[sisize]

Your welcome, I would try to stick to a genuine filter if it isnt too pricey as some of the bits from auto factors can be poorly made and introduce more faults, I work at Mercedes and we get a lot of faults due to patent parts being fitted so I always try to buy genuine service bits where I can
Sisize

[mybad]

Sept 3, 2013 20:26:43 GMT sisize said:

Your welcome, I would try to stick to a genuine filter if it isnt too pricey as some of the bits from auto factors can be poorly made and introduce more faults, I work at Mercedes and we get a lot of faults due to patent parts being fitted so I always try to buy genuine service bits where I can
Sisize

I will second this statement , a cheaper motor factors filter was fitted to my motor and it gradually deteriorated and the bits of particles that it lost ended up blocking the fuel pump which in turn ended up costing me £350 to get it fixed , so it really ended up being a very expensively cheap fuel filter.