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Audi A4 R4 2.0PD TDi BRD 2007 - Code 08194 P2002 DPF Sensor fault - Fixed #

Posted by Liam Hall on July 26, 2012, 9:44 am

Year of Manufacture *: 2007 '07
Engine Size and Code *: 2000 BRD
( Optional ) Scanner Used: VCDS
( Optional) Fault Codes: P2002 / 08194

Hi all,
Have this one in at present, had engine management light and glowplug light and DPF symbol on display.

Scanned vehicle and a permanent EGR fault was present, fitted a new EGR and this fault has gone.

I have looked back on the forums and the dpf sensor seems common, confirmed by tps sales and stock levels.

I have changed the sensor, but hit a dead end, in measuring blocks the soot level is 92.5%.
So I cannot and darednt force a regen.

If I was to have this washed out by a company local to me, will the car sense the differential pressure difference and let me do a regen?

I dont have any real experience with these so any hints would be good.

Ross tech wiki suggest that over 45% soot content and the trap should be replaced.

Has anyone done a cleanout?

Thanks in advance.

Liam.

Re: Audi A4 R4 2.0PD TDi BRD 2007 - Code 08194 P2002 DPF Sensor fault #

Posted by Piotr Sokolowski <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1848' width='330' height='300' border=0 style='border:none;'> on July 26, 2012, 10:45 pm, in reply to "Audi A4 R4 2.0PD TDi BRD 2007 - Code 08194 P2002 DPF Sensor fault #"

I personnally wouldn't bother with cleaning and etc. Remove it and forget about it but if you really want to do it clean the filter , reset the counters-dpf change and then perform regeneration.

Link: http://pandpauto.eu

Re: Audi A4 R4 2.0PD TDi BRD 2007 - Code 08194 P2002 DPF Sensor fault #

Posted by james mccallum <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat5583' width='330' height='300' border=0 style='border:none;'> on July 28, 2012, 9:28 pm, in reply to "Re: Audi A4 R4 2.0PD TDi BRD 2007 - Code 08194 P2002 DPF Sensor fault #"
James McCallum

Hi there. if you clean it, the sensor should detect reduce pressure and allow a regeneration. Do you know anyone that can do forced regeneration for you?
Jim

Re: Audi A4 R4 2.0PD TDi BRD 2007 - Code 08194 P2002 DPF Sensor fault #

Posted by liam hall <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3033' width='330' height='300' border=0 style='border:none;'> on July 29, 2012, 11:47 am, in reply to "Audi A4 R4 2.0PD TDi BRD 2007 - Code 08194 P2002 DPF Sensor fault #"
Liam Hall

Vag com is supposed to be able to do an emergency regeneration, but I don't want to until cleaning out.

I will get the trap off and have it cleaned and have a go.

cheers

Liam.

Re: Audi A4 R4 2.0PD TDi BRD 2007 - Code 08194 P2002 DPF Sensor fault #

Posted by Rob Nicholson <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT5122' width='330' height='300' border=0 style='border:none;'> on July 30, 2012, 7:07 pm, in reply to "Re: Audi A4 R4 2.0PD TDi BRD 2007 - Code 08194 P2002 DPF Sensor fault #"

Hi Liam,

I have just bought the Tunap DPF cleaning kit, a little pricy at £350+ but this includes solution for 6 cleans, they will come out and demo it so you will have your problem vehicle cleaned for free

, we saw a big reduction in differential pressure after cleaning the DPF

Cheers

Rob

Re: Audi A4 R4 2.0PD TDi BRD 2007 - Code 08194 P2002 DPF Sensor fault #

Posted by Matt Booth <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3028' width='330' height='300' border=0 style='border:none;'> on July 31, 2012, 1:44 pm, in reply to "Re: Audi A4 R4 2.0PD TDi BRD 2007 - Code 08194 P2002 DPF Sensor fault #"
Matthew Booth

Isn't there an adaptation to be done when fitting a new dpf sensor? Either a vag com job or key on/off 5 times dependant on year. Also I believe there's a software update.

Trouble with removing the dpf is you then need it remapped. I would have thought at that saturation level you'd have more than just a light.

Matt

Re: Audi A4 R4 2.0PD TDi BRD 2007 - Code 08194 P2002 DPF Sensor fault #

Posted by Liam Hall <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3033' width='330' height='300' border=0 style='border:none;'> on July 31, 2012, 2:33 pm, in reply to "Re: Audi A4 R4 2.0PD TDi BRD 2007 - Code 08194 P2002 DPF Sensor fault #"
Liam Hall

I'd be grateful to know if the sensor does need adaptation, before I go stripping things out.

Liam.

Re: Audi A4 R4 2.0PD TDi BRD 2007 - Code 08194 P2002 DPF Sensor fault #

Posted by Liam Hall <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3033' width='330' height='300' border=0 style='border:none;'> on August 6, 2012, 5:22 pm, in reply to "Re: Audi A4 R4 2.0PD TDi BRD 2007 - Code 08194 P2002 DPF Sensor fault #"
Liam Hall

Have had another look at this today.

carried out sensor adaptation (G450), which made no difference.

The soot level is still 95%, as I have not carried out a regen.

I did initiate a forced regen and the car came out of limp mode and allowed me to rev past 3k.

I dare not perform the drive cycle after warnings on ross tech that fire is possible - would anyone else say its risky??

One other note that I could do with some guidance please is that my P2002 code comes back KOEO without even starting the engine. Is this because it has decided it NEEDS a regen, or am I looking at a poss wiring fault?

My intentions are to check wiring and then remove DPF.

If anyone has any advice they might share I would be most grateful.

Liam.

Re: Audi A4 R4 2.0PD TDi BRD 2007 - Code 08194 P2002 DPF Sensor fault #

Posted by rob cruickshank <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1575' width='330' height='300' border=0 style='border:none;'> on August 7, 2012, 5:03 pm, in reply to "Re: Audi A4 R4 2.0PD TDi BRD 2007 - Code 08194 P2002 DPF Sensor fault #"
Robert Cruickshank

Hi liam, The p2002 code is set on the previous drive cycle and will not clear until a drive cycle with a low soot level is completed. I did a successful regen on a ibiza yesterday with a 88% loading and have done crafters with 90%. it will take a few miles. hth regards rob

Re: Audi A4 R4 2.0PD TDi BRD 2007 - Code 08194 P2002 DPF Sensor fault #

Posted by james mccallum <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat5583' width='330' height='300' border=0 style='border:none;'> on August 8, 2012, 6:37 pm, in reply to "Re: Audi A4 R4 2.0PD TDi BRD 2007 - Code 08194 P2002 DPF Sensor fault #"
James McCallum

Hi Liam, you could go for Forced regen, have fire extingusher handy, I havent seen one go up yet. Or give wash out then regen, it is the massive heat build up and lack of air that causes the problem. Can but try. HTH
James

Fixed #

Posted by liam hall on August 8, 2012, 9:34 pm, in reply to "Re: Audi A4 R4 2.0PD TDi BRD 2007 - Code 08194 P2002 DPF Sensor fault #"
Message modified by board administrator August 9, 2012, 1:33 pm

FIXED!!

I decided to be brave and carry out a forced regeneration, and take an extinguisher with me - except in my haste I forgot the extinguisher!!

Drove the car for around 20 miles and the soot level went down to 0%.

The P2002 code cleared and didn't return, so another happy day!

This might be nothing new to some people, but I have only had a small amount of experience with dpf.

The pure fact that this was fixed by an independent will also reinforce the fact that they don't have to rely on the main stealers - a good thing me thinks.

That inexplicable feeling of fixing another and those pesky lights staying off is also, very nice!!

I now feel much more confident, especially after having no mishaps at 95% soot level.

Many thanks for all the replies.

Liam.

Re: Fixed

Posted by Jon Morgan <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3190' width='330' height='300' border=0 style='border:none;'> on August 8, 2012, 9:44 pm, in reply to "Fixed"
Jonathan Morgan

There are some good "main stealer" lads active on this forum Liam.

Nobody likes being tarred with a broad brush stroke & I wouldn't like to see the dealer guys stop posting some real gems on here from time to time after taking exception to a title.

I've worked in the dealer network at some quality garages, so they don't all deserve that main stealer mantle that is often banded around on none trade forums.

Just my opinion, I'm not trying to start a dust up

Re: Fixed

Posted by liam hall <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3033' width='330' height='300' border=0 style='border:none;'> on August 8, 2012, 9:53 pm, in reply to "Re: Fixed"
Liam Hall

Actually, you're dead right Jon.

I was not getting at the techs, more the over charging that goes on.

Thanks for pointing that out

Liam.

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