DPF pressure sensor

[RestlessDiesel]

Hello,
Had a V50 2.0D R Design for a few months now and it's a nice car in many ways. Car is a 2010 with 117k miles and all feels very tight and new.

However it has one persistent and annoying problem which I understand is quite common. I know there are other threads about it but I can't find one covering this specific issue so I thought I'd start a new one.

Every so often after hard acceleration the car throws up a fault code and seems to disable the turbo. I have read and reset the faults on a code reader, it is the DPF pressure sensor. I have replaced this shortly after I bought the car so I'm pretty sure the unit itself is OK, and I'm fairly sure the DPF itself is fine as the car runs well and there's no smoke.

If I understand this right, moisture and gunk gets into the sensor and causes faults?

I have taken the sensor off and let it dry out indoors and this did seem to reduce the problem for a while, but so far haven't dared to squirt WD40 or poke anything down it as I fear I might damage it. The pipes appear to be in good order, at least the bits of them I can see, so I'm at a bit of a loss as to what to do next.

Is cleaning the sensor ok? Would replacing the pipes be a better idea? Or is there anything else I can try?

I can get the fault codes next time if this would help isolate the problem.

Thanks in advance

[IainG]

Hi
If you can get access to Vida Dice it would be better.
You can monitor the sensor at different revs, so you can see if the sensor is working ok and giving the correct readings and if the DPF is blocked or partially blocked. It would also show any fault codes and how to test/remedy them.
the DPF pipes to the sensor on some cars fail. should be able to blow down through both to see if they are clear but that won't test for broken pipes though.

Iain

[RestlessDiesel]

Thanks Iain.
Should the pipes be open or should there be resistance when you blow through them?

[Clan]

Originally Posted by RestlessDiesel

Thanks Iain.
Should the pipes be open or should there be resistance when you blow through them?

The pipes are usually changed with the sensor to ensure 100% operation they are narrow and can get blocked with soot and condensation … yes you should be able to blow air down both of them from the sensor end .