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Old 07-09-2012   #1
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Angry DPF clogged, regen failed maybe?

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

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

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)

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this is screen after, says complete but still clogged.

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How do i clean it, take it off and pour petrol through it?
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Old 07-09-2012   #2
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Re: DPF clogged, regen failed maybe?

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.
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Old 07-09-2012   #3
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Re: DPF clogged, regen failed maybe?

mes said coolant has to be 70
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Old 07-09-2012   #4
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Re: DPF clogged, regen failed maybe?

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.
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Old 07-09-2012   #5
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Re: DPF clogged, regen failed maybe?

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
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Old 07-09-2012   #6
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Re: DPF clogged, regen failed maybe?

Quote Originally Posted by halilson View Post
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
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Old 07-09-2012   #7
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Re: DPF clogged, regen failed maybe?

are you guys talking about the dpf temperature itself? so i should leave it running till dpf temp reads 600 then try regen again?
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Old 07-09-2012   #8
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Re: DPF clogged, regen failed maybe?

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.
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Old 07-09-2012   #9
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Re: DPF clogged, regen failed maybe?

didnt check that, not been changed for a year, was supposed to be one of last months jobs but body shop had the car
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Old 07-09-2012   #10
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Re: DPF clogged, regen failed maybe?

Quote Originally Posted by halilson View Post
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
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Old 07-09-2012   #11
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Re: DPF clogged, regen failed maybe?

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
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Old 07-09-2012   #12
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Re: DPF clogged, regen failed maybe?

Quote Originally Posted by dave View Post
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
Go for it
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Old 08-09-2012   #13
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Re: DPF clogged, regen failed maybe?

this distance of regens dont look right?

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been on fast idle for ages got temp up to 220, going to give it another go
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Old 08-09-2012   #14
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Re: DPF clogged, regen failed maybe?

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.
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Old 09-09-2012   #15
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Re: DPF clogged, regen failed maybe?

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.
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