DPF faults

[danthevan]

Hi all,

Having a few problems with the car constantly being in limp mode (607 2002 2.2hdi).
Here goes the story so far.........

About 6 months back, had the dpf filter blocked light come on the dash. Changed the dpf, and all was fine again.
Couple of weeks back, the problem has returned. I don't 'think' the filter should be blocked again, unless there is a problem with the regeneration. It's my mum's car, so used to short journeys, although it does get a run out by the old man once a week.
Just had it scanned at my local garage while they were doing the mot and come up with the following codes:
P1425
P0235
P0245
P1435
P0380

From what i can see, there is a turbo sensor problem, and something with the wastegate solenoid.
Then the other 2 are glow plug problems.
Sort of dismissing the air con fault.

What would be the next step?
Before i got the codes, philkerman recommended cleaning the pressure sensor which i'll do tomorrow, but do you think the other codes are related to the dpf problems?

[bettyswollocks]

The glow plugs are needed for dpf aswell

[danthevan]

That's the answer i was looking for

Typical pug, i thought it was going to be something like that, or needs the rear passenger seat belt plugged in to work

[danthevan]

Ok, after a bit more googling and ending up at my trusty bba reman site i've got a little more elaboration on the codes:

P1425 EGI glow plug Secondary failure / ED15C2 with FAP - Catalytic converter downstream temperature signal. Short circuit to positive or open circuit or Coherence between converter 1 & 2 temperature signal.

Duff sensor? Wiring all looks intact.

P1435 A/C Refrigerant temperature circuit Range/Performance / EDC15C2-Additive adding system. Faults additive accuracy.

This is the one I didn't want to see! Although looking at the how to of how to top up the system i'm slightly more confident.

I now just have the mil light on, not giving any warnings about the dpf, but still in limp mode.

Would these 2 codes bring up the 2 turbo faults too, or are these unrelated?
What would be the next step?

Going to order a lexia 3 interface so I can get some more info as the scanner I have is pretty useless on anything other than VAG stuff.

[dieselnutjob]

A couple of years ago the eolys fluid ran out on mine and I spent a small fortune sorting that out, but then I was getting poor economy and it was regenerating every 160 miles or so.
So I disabled and removed the DPF
My fuel consumption has reduced from about 33mpg to about 37. This is a 2.2 HDI auto.
It still easily passed its MOT a couple of months ago and my MOT guy is pretty strict.