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Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #

Posted by Paul Eady on June 6, 2011, 2:43 pm

Year of Manufacture *: 2004
Engine Size and Code *: 1.9 DCI
( Optional ) Scanner Used: Clip & Verus
( Optional) Fault Codes: DF312

Fault code DF312 "SPEED SIGNAL"
Car came in with partical filter warning & had blown off the front pressure sensor pipe.
Removed & cleaned the filter, done a forced regeneration & all cleared.
500 miles later same fault, so fitted a new partical filter,regen & all good.
500 miles later same again
Each visit had code DF312 which would not clear unless a forced regeneration was carried out,
soot content was 67 & 0 after regen.
History had 8 regen attempts.
Cant find any info on the fault code, seems to me the car needs some speed info to complete the regen prosess, & that unit is not working.
Where is it, what does it look like.
I have now got 3 cars all the same.

Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #

Posted by Kevin Apps <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT2589' width='330' height='300' border=0 style='border:none;'> on June 6, 2011, 4:22 pm, in reply to "Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #"
Kevin Apps

Paul
You should have an e.mail with trouble shooting DF 312.
Kev.

Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #

Posted by Paul Eady on June 6, 2011, 5:53 pm, in reply to "Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #"
Message modified by board administrator June 28, 2011, 3:50 pm

Thanks for that.
I will read that several times to digest it, with a cuppa, seems to me its a ongoing french fault & the driver has to be made aware.
Will get the cars back in & recheck.
Was that info on dialogys?

Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #

Posted by Paul Eady on June 28, 2011, 2:15 pm, in reply to "Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #"
Message modified by board administrator June 28, 2011, 3:46 pm

Carried out another regeneration & this lasted for about 300 miles.
Digested the tec note 6507A, cant believe its driver error?.
Another scenic with the same fault went to the main stealer & they fitted a new partical filter,intercooler, intercooler pipe and a speed sensor, £1900.00
Now I still think it is a speed sensor issue but the renault dealer tells me they only fitted a partical filter to that car, why dont they want me to know what they fitted?
Can any body help with what speed sensor it is?

Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #

Posted by Darren Bamford <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT5465' width='330' height='300' border=0 style='border:none;'> on June 29, 2011, 8:09 am, in reply to "Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #"
Darren Bamford

Hi Paul

fault code DF312 is not the cause of the fault ,just the result of the fault.

Basically DF312 is telling you the regeneration process as started whilst driving ,but failed to complete successfully. If the process fails after 7 attempts and the soot loading is above 21 grams it will flag DTC 312.

You will never get DF312 DTC on its own, it will only be in conjunction with other faults.

But it will only clear if forced regeneration is completed successfully.

If you look at the statues and parameters you will see the failed regeneration attempts.

Hence the fault "speed request". It is telling you that vehicle is not being driven at the correct speed to complete a regeneration process.

Make sure the engine is operating correct and efficiently , but it may well be down to unfavorably driving style by the customer.

what area are you in.

Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #

Posted by Sean Mc Gettigan <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT5291' width='330' height='300' border=0 style='border:none;'> on June 30, 2011, 8:46 am, in reply to "Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #"
Sean McGettigan

As Darren said above with one ammendment in that I have had this fault code in two Laguna's now on its own ie no other engine DTC's.

Got one sitting here just now, 06 reg, F9Q engine used for mostly short journeys.

Regards
Sean

Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #

Posted by Glen Strachan <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat1463' width='330' height='300' border=0 style='border:none;'> on July 14, 2011, 3:44 pm, in reply to "Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #"

We have one of these in at the mo with no fault codes but the engine wont rev up. If I unbolt the DPF from the manifold it revs freely.

I'm a bit worried why it has no faults in it. I can only assume the pressure sensor isnt functioning correctly ?

Could this have been caused by wrong oil ? Its the first time I have seen one completely blocked

Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #

Posted by Sean Mc Gettigan <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT5291' width='330' height='300' border=0 style='border:none;'> on July 15, 2011, 6:49 am, in reply to "Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #"
Sean McGettigan

Is the EML on Glen?
What are you using to read it?

Yes wrong oil can cause this(very quickly).

Hth
Sean

Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #

Posted by Glen Strachan on July 15, 2011, 9:35 am, in reply to "Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #"
Message modified by board administrator December 6, 2011, 3:13 pm

no codes - other than glow plug circuit, which is what I find so baffeling
New DPF arriving today and I have already changed the oil to be on the safe side.
When it came in the customer said a boost hose had popped off ( excess backpressure I guess) and she had it refitted elsewhere, so maybe they cleared the codes

Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #

Posted by Kevin Apps <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT2589' width='330' height='300' border=0 style='border:none;'> on July 15, 2011, 2:05 pm, in reply to "Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #"
Kevin Apps

Glen.

"no codes - other than glow plug circuit" ! ! !

Kev.

Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #

Posted by Glen Strachan on July 15, 2011, 2:31 pm, in reply to "Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #"
Message modified by board administrator December 6, 2011, 3:13 pm

sorry, no relevent code.
Anyway, glow plugs ,DPF and rear silencer replaced along with fresh oil + filter now goes like it should.
I was just wondering if anyone could enlighten me as to why this wasnt giving up regen codes or something similar and why the thing blocked solid in the first place.
Dont want to see it back in 3 months

Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #

Posted by Kevin Apps <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT2589' width='330' height='300' border=0 style='border:none;'> on July 15, 2011, 2:41 pm, in reply to "Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #"

Glen.

Do you know for a fact the code is not relevent ?
as i,m sure it could (will) be !

Kev.

Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #

Posted by Sean Mc Gettigan <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT5291' width='330' height='300' border=0 style='border:none;'> on July 15, 2011, 5:18 pm, in reply to "Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #"
Sean McGettigan

As Kev says above Glen.

Also another question to add to the two unanswered questions in my post above.

Have you to 'told' the ECU that you have fitted a new DPF?? (as required).

I think some homework is required on DPF function and operation.
PMM mag covers some basics in the July/August edition (and previous months) for starters

Regards
Sean

Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #

Posted by martin simonsohn <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3223' width='330' height='300' border=0 style='border:none;'> on July 15, 2011, 5:33 pm, in reply to "Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #"
Martin Simonsohn

Are the glow plugs not required to asist in aiding the raise in exahaust temp to regen the filter??

Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #

Posted by Kevin Apps <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT2589' width='330' height='300' border=0 style='border:none;'> on July 15, 2011, 7:02 pm, in reply to "Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #"
Kevin Apps

Martin

Exactly, the glow plugs are needed to do a re-gen.

Glen.

Never assume, just study.

Kev.

Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #

Posted by Glen Strachan <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat1463' width='330' height='300' border=0 style='border:none;'> on July 20, 2011, 8:00 am, in reply to "Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #"

I have been researching and cant find any literature online regarding glow plug use during active regeneration. Does anyone have a link that may help ?
I have ordered the Bosch yellow Jacket Diesel emission control so hopefully that will cover it.
On the Bosch common rail course it didn't get too deep into DPFs ( I'm guessing thats on a master tech course )

Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #

Posted by Mark Carter <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1428' width='330' height='300' border=0 style='border:none;'> on July 20, 2011, 8:43 am, in reply to "Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #"
Mark Carter

Hi Glen,

When did you sit the common rail course ?

Regards Mark

Modern cars, Its all wizardry and witchcraft

Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #

Posted by Glen Strachan <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat1463' width='330' height='300' border=0 style='border:none;'> on July 20, 2011, 9:03 am, in reply to "Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #"

november 2008

Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #

Posted by Mark Carter <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1428' width='330' height='300' border=0 style='border:none;'> on July 30, 2011, 11:25 am, in reply to "Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #"
Mark Carter

Hi Glen,

Sorry for the delay in replying, the course has been re-worked since then. It now includes a section on Oxi cats, DPF and Piezo injectors.

If you PM me I may be able to help with some understanding.

Regards Mark

Modern cars, Its all wizardry and witchcraft

Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #

Posted by Glen Strachan <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat1463' width='330' height='300' border=0 style='border:none;'> on July 30, 2011, 11:42 am, in reply to "Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #"

I have now received the Bosch yellow Jacket on Diesel emmision control and it looks pretty in depth. I have yet to read it all but will PM you once I'm through if I have anything I'm not sure of Thanks !
I had a peugeot in yesterday and it had a non genuine DPF fitted and the pressure difference was lower than I expected to see. Thought I'd mention it.

Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #

Posted by Dave Hill <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT2783' width='330' height='300' border=0 style='border:none;'> on July 31, 2011, 5:54 pm, in reply to "Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #"

Hi Glen

This thread highlights the need for technicians to study, be it via training, or actively seeking info to fill the gaps.

The very first Common Rail course I attended with James Dillon (in 2008) was very informative for sure, but to expect that "it alone" is enough to keep me up to speed, would be a mistake. I suspect that the Bosch courses have also evolved massively since your last attendance.

Much reading & yes, even googling is needed to keep up. Common rail technology has been around for over a decade now (in light vehicle form at least) & as we all know, technology just doesn't stand still. Diesel Particulate Filtration Technology is a fine example of the evolution.

Cheers

Dave

Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #

Posted by Glen Strachan <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat1463' width='330' height='300' border=0 style='border:none;'> on August 1, 2011, 8:13 am, in reply to "Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #"

Quite agree Dave. Until recently I thought I understood DPF's completely !!
I'm working on a leaflet that I can give to customers before they have problems to try to educate them on how to drive their car !

I think the next educational thread is going to be CAN systems :-0

Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #

Posted by Chris Angus <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT5111' width='330' height='300' border=0 style='border:none;'> on August 1, 2011, 11:47 am, in reply to "Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #"

Has the customer had this car long, could do with finding out some history.
I've seen quite a few with the DPF functions mapped out when tuned for performance, some don't bother to remove the filter so of course it blocks up. Worth investigating.

Chris

Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #

Posted by Mark Carter <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1428' width='330' height='300' border=0 style='border:none;'> on August 7, 2011, 10:55 pm, in reply to "Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #"

Hi Dave,

>>> technology just doesn't stand still. Diesel Particulate Filtration Technology is a fine example of the evolution. <<<

I could not agree more, The next diesel Emission "issue" we will all see is the SCR system, and a whole load of new fault codes to suit.

Regards Mark

Modern cars, Its all wizardry and witchcraft

Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #

Posted by Ian Cross <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3377' width='330' height='300' border=0 style='border:none;'> on December 5, 2011, 9:12 pm, in reply to "Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #"

Looking at a Laguna 2 on engine F9Q 758 130bhp 2006 1.9 dci. Will not regen . Main dealer replaced egr dpf sensor but still will not regen. 99k on clock came to me. DPF replaced no fault codes but fails to regen. With clip I can see missing speed sensor but is not a hard code and shows speed. Question is were does the speed pulse come from?

Link: http://tracking4u.co.uk

Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #

Posted by Mark Carter <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1428' width='330' height='300' border=0 style='border:none;'> on December 5, 2011, 10:35 pm, in reply to "Re: Renault Scenic 1.9 DCi 2004 - Particulate filter code DF312 #"
Mark Carter

Hi Ian,

If your vehicle is posting DF132 then you need to read Darren's post further up.

If not what is the fault code?

Regards Mark

Modern cars, Its all wizardry and witchcraft

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