Technical DPF clogged, regen failed maybe?

dave · Sep 7, 2012

when i picked my car up from the body shop last week after they had has it a month, there was a bit of paper in it with code wrote on.

p2009 flow shutter valve ( i dont know what that is? )

p1206 particulate filter ( i know what one of them is)

Any way i asked the guy at body shop what it was and he said he had no idea :bang:

whilst car has been in body shop its been taken to fiat dealer to have a pas loom upgrade @ cost to me

and an oxygen sensor @ cost to body shop.

car had to go back to body shop monday as the repair it actually went in for hadn't been done right. today i collected it again, on way home engine light comes on.

code now is P1206 clean or replace dpf!
same code as 1 what was on the bit of paper found in my car :chin:

when i still had the car on sunday i drove 260 miles of motorway and dual carriageways.

i tried a regen with multiecuscan, looks like it wont do it because dpf is too clogged?

this is screen when i started it.. (click picture to see bigger)

this is screen after, says complete but still clogged.

How do i clean it, take it off and pour petrol through it?

Most Easterly Pandas · Sep 7, 2012

That attempted when stationary Dave? Should be able to do it when stationary, but might be worth trying it when driving at a steady 50 to have increased engine temp possibly

Temps look a bit low, I though regen temps are around 400C, but could be wrong.

dave · Sep 7, 2012

mes said coolant has to be 70

halilson · Sep 7, 2012

Fully clogged is 250 % strangely enough and the temperature required for regen is in excess of 600 degreees! I think forced regen should be done whilst stationary, otherwise you risk damaging the engine.
The problem is that the ecu basically takes an educated guess at what it thinks the state of the DPF is, based on readings from several sensors. For example, when I gutted mine the ECU said it was 110% clogged and carried on increasing, despite the fact that it was an empty shell! 79% isn't particularly high so the problem may lie elsewhere.

dave · Sep 7, 2012

hmm where does it get reading from, could the new sensor they put in it be to clame.

or this other fault that was on the bit of paper left in my car P2009 but seems like they just deleted the codes

Most Easterly Pandas · Sep 7, 2012

halilson said:
Fully clogged is 250 % strangely enough

New one on me. As far as I was aware 100% is just that - i.e. USed.

Normal regen happens at 35-40% to enable for a few failed regens before it reaches about 65-70% when forced needs to be done to prevent the filter from becoming completely broke.

600C sounds right, I did think that earlier, but didn't it seemed right

dave · Sep 7, 2012

are you guys talking about the dpf temperature itself? so i should leave it running till dpf temp reads 600 then try regen again?

halilson · Sep 7, 2012

When you do a forced regen, then the ECU will automatically bring the temperature up by forcing extra fuel into the engine. It does sound like something else is amiss. What is the oil degradation reading? The oil may need changing and the counter resetting.

dave · Sep 7, 2012

didnt check that, not been changed for a year, was supposed to be one of last months jobs but body shop had the car

Most Easterly Pandas · Sep 7, 2012

halilson said:
What is the oil degradation reading? The oil may need changing and the counter resetting.

Ah, a good point.

On the Croma it send fuel in through the exhaust stroke from the engine injectors does it?

Not got a separate fuel injector on the DPF like newer Fiat DPF's

dave · Sep 7, 2012

just looked at the copy of parts the bodyshop are billing insurance for, and its got front temp sensor listed, they didnt mention this to me at all :chin:

Most Easterly Pandas · Sep 7, 2012

dave said:
just looked at the copy of parts the bodyshop are billing insurance for, and its got front temp sensor listed, they didnt mention this to me at all :chin:

Go for it :devil:

dave · Sep 8, 2012

this distance of regens dont look right?

been on fast idle for ages got temp up to 220, going to give it another go

keithglos · Sep 8, 2012

Dave, Oil degradation could be your problem, see if you can zero it. You will not get a regen with that amount of oil degradation, which is a counter that most garages can't reset. The ECU assumes that the oil will not stand the extra temperature. After the 18000 mile oil change it allows another 2000, then refuses to regen.
Diesels don't warm up on tick over, you need to get it out on the road and try to keep it above 3000 rpm after warm up.
I see it has apparently been getting very frequent regens. My 2.4 regens about 400 miles, but I do very little traffic or motorway.
Keith

keithglos · Sep 9, 2012

Also I usually have the instant mpg readout switched on, so that I know it is doing a regen when the expected mpg is suddenly half, and it has finished when it goes back up.

Doofer · Sep 9, 2012

I agree with Keith - reset the oil change counter.

If you can't do it with the current free version of FiatEcuScan (or whatever it's called these days) then there's an older free version that can do it.

Also agree about the interval between regens. Perhaps if it decides to regen then doesn't bother because of the old oil then it still counts it as a regen. So yours keeps trying but fails to properly start (just a theory).

Did you not get any dashboard warning with the oil showing as that far degraded? Or perhaps it told the previous owner for a while then gave up.

What I don't understand is why it says 48500km (I think) to the next oil change. It should be lower if the oil's that far gone. What does your mileage read in the car if you change the scale to km using the buttons next to the steering wheel? I'm wondering what distance it has done since it last had an oil change it knew about.

I'm wondering whether the degredation is one of those that's negative even though they don't tell you - does 100% actually mean freshly changed? I've got a vague memory of something like this when I last played with mine.

dave · Sep 9, 2012

ive got fully licenced paid for fes/mes
i did oil change myself and reset everything last year, its on 100,300 now

Hellcat · Sep 9, 2012

Any funny smells outside the car? Ours was trying to regen at very low intervals and it was down to the exhaust blowing - so the super-hot gas was actually escaping rather than clearing out the DPF.

dave · Sep 9, 2012

no smells, i have been under car yesterday an exhaust looked sound

Doofer · Sep 9, 2012

So it sounds like the car doesn't bother telling you if the oil has degraded. Is this right?

Technical DPF clogged, regen failed maybe?

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