Member Since: 29 Dec 2019
Location: bergen
Posts: 12
DPF full visit dealer - p244B fault code
Hi good people!
I have a 2008 D3 with the dreaded diesel particulate filter (DPF). I havent had the car for long, but recently I have been having some trouble with said filter. Quite randomly, but more and more often, it displays "DPF full visit dealer" and goes in to limp mode. Turn it of and on again and if can either go right back to p244b within 10 minutes, or I can drive it 200km or a day without seeing it again.
Fault comes up as P244B - Diesel Particulate Filter Differential Pressure Too High
I have had it at the mechanic, who claims he did to regens on it without problems. I have no reason to doubt that. I have tried changing the differential pressure sensor. Did no difference. I Tried blowing into the hoses on the sensor with compressed air to se if blocked. Not blocked.
I cant seem to get any readings on ash or sot level, only thing I find the numbers for is pressure in and out on the sensor, given in kpa.
30th Dec 2019 10:09 am
J.Prezes
Member Since: 10 May 2015
Location: usually at my Indy's shop
Posts: 62
run for a longer time in lower gears in manual mode, you want to burn out the crap clogging DPF, there should be smth about it in the owners manual OR just cut it out and remap which means no hassle in the future but your ability to do so may depend upon your local laws
31st Dec 2019 7:33 pm
MariusRR
Member Since: 29 Dec 2019
Location: bergen
Posts: 12
Thing is, accorrding to mechanic its regenerated twice. Also did a run with my own diagnostic and it says its clean.
31st Dec 2019 8:15 pm
wedgev8
Member Since: 17 May 2019
Location: Kerpen
Posts: 181
Would you please list the readings of the pressure sensor (kPa)
If possible when idling, on road at 2000 1/min and at 2500 1/min (both in 6th gear and on plain road)
Regards,
Thomas
1st Jan 2020 2:31 am
MariusRR
Member Since: 29 Dec 2019
Location: bergen
Posts: 12
Yes! I gave this a try.
Startet up the car today. Went into limp mode 5 times but then I got it out on the road. Now with a check engine light but no more limp mode and dpf full messages.
Cold on idle it startet on 4.03 kPa, then adjustet down to 2.08 Kpa on Bank 1 (which I guess is inlet pipe, ergo pipe before DP). Reading on bank 2 (which I guess is the outlet pipe after the dpf) is always 0.05 Kpa whatever the speed or rpm.
Fault code is 244b - Diesel particulate filter differential pressure too high (BANK 1).
Lots of traffic so gave up and drove home. Tried again 4 hours later. on start up it was 0.03 kpa on idle. Started driving.
2000 rpm in 6th is around 120 km/h. At that speed it reads around 16-18 kPa. 2500 rpm on 6th is too fast for the roads here on the day after new years, guessing around 140km/h, but in 5th its somewhere around 20 Kpa.
When I parked outside the hos the kpa is again 2.08 kpa on bank 1, and 0,05 on bank 2.
1st Jan 2020 5:29 pm
wedgev8
Member Since: 17 May 2019
Location: Kerpen
Posts: 181
Hello Marius,
Your differential pressure readings are very high.
Here are my readings:
At idle 0,3 kPa
At 2000 rpm > 120 km/h > 4,2 kPa
At 2500 rpm > 150 km/h > 8,8 kPa
While hard acceleration about 20 kPa only for a short time.
My Disco is also 2008 and I have bought it in April 2019 with 141.000 km on clock. I drove about 4000km since April. I had the first DPF full message after 1000km from buying the car. Than the Problem came up more and more often, so I decided to take the DPF to a cleaning Company.
They tried to clean it with a thermic method, but they didn´t reach the "as new values" because of some melted areas in the inner ceramic monolith of the DPF.
I refitted the DPF and it is not like a new filter but better than before. I am doing a forced regeneration drive cycle all 500km because the readings climb to the double. I have an iCarsoft LR for doing this.
My car is using much oil. About 2L all 1000km. I think this is the reason why the DPF is clogged so often. Maybe my turbo ist faulty cause of driving long time with a clogged DPF.
In the next weeks I am planning to remove the turbo and fit a new or recon unit. Also the catalytic converter should be cleaned and maybe a another DPF.
So I´m looking for a good used DPF which can be cleaned to as new values.
… a never ending story
1st Jan 2020 7:03 pm
MariusRR
Member Since: 29 Dec 2019
Location: bergen
Posts: 12
Great! Thank you so much, this was all I needed to know.
I think I am going to delete the DPF. Will talk with the garage tomorrow, but they have tried to clean it twice and it is obviusly not working. I cant see any good reason to innstall a new one at the price of a new one.
On the icarsoft, do you get any readings on bank 2 btw?
My car goot a new turbo 15.000 km ago. It was also filled with the wrong oil for the last 15.000 km, witht the non-dpf 5w-30.
1st Jan 2020 7:15 pm
wedgev8
Member Since: 17 May 2019
Location: Kerpen
Posts: 181
Please let us know about the outcome with deleting the DPF from the ECU. I am also looking for someone here in Germany who is able to delete it. But I found nothing till today. Further I´m afraid about the german TÜV / MOT when the Filter is off the car.
The reading for bank 2 is not working on the Disco 3. I have also 0.5 kPa. Bank one are all sensors on the left engine side I think. Bank 1 EGR, bank 1 temperature sensors and so on. On the right side there is only the EGR but no temperature or DPF sensors.
what is the difference between motor oil for DPF and no DPF? I have filled in 5w30 with the ford specification, you can find in the users handbook.
what where the reason for changing the turbo in your car?
Thomas
1st Jan 2020 9:57 pm
MariusRR
Member Since: 29 Dec 2019
Location: bergen
Posts: 12
I`ll let you know about the dpf when I have talked with my mechanic tomorrow. Might take it out annd souorce someone who can clean it
The DPF D3 needs WSS-M2C934-B type 5w-40. It says wss-m2c913-b in the service book on most D3 with dpf, bit Land Rover send out a bulletin in 2011 saying the WSS-M2C934-B is the one to use due to being low ash, which is needed with the dpf system (WSS-M2C934-C or WSS-M2C934-D is also ok).
you need to program the car after dpf removal. Then it shouldnt be a problem with MOT either, since the MOT-requierments is often based on the non dpf version i Believe .
1st Jan 2020 10:14 pm
urhunden
Member Since: 15 Jan 2010
Location: Stockholm
Posts: 773
I have a Disco3 TDV6 MY 2008.
Have emptied my DPF so it is still there with sensors.
Have remap by BAS, blanked the engine and patches for removing DPF and blanking.
It all works well.
1st Jan 2020 10:43 pm
wedgev8
Member Since: 17 May 2019
Location: Kerpen
Posts: 181
ok, but what is with the catalyst. Is it also a clogging problem with the catalyst?
1st Jan 2020 11:03 pm
urhunden
Member Since: 15 Jan 2010
Location: Stockholm
Posts: 773
What I understand is that when you have a dpf there is no Cat in the system.
Anyway when I did the blanking and emptying the dpf there was no talk about a Cat.
2nd Jan 2020 12:53 am
Globetrotter448
Member Since: 21 Mar 2017
Location: Londonderry NSW
Posts: 1782
There may be a misunderstanding, Bank 1 is one side of the engine and Bank 2 is the other side of the engine. So the Bank 2 side looks normal and you should concentrate on the Bank 1 side as being a possible problem.
2nd Jan 2020 7:03 am
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
You might find the Euro4 D3 has a DOC cat as well as the DPF?
2nd Jan 2020 7:49 am
wedgev8
Member Since: 17 May 2019
Location: Kerpen
Posts: 181
My Disco3 EU4 has oxi catalyst and DPF. (#5E212A on the picture)
you can see it in the parts list. EU3 Discos have only the catalyst. For the DPF function it is necessary to have also a catalyst. For explanation why the catalyst is important before the DPF you can find some info with google or Wikipedia.
So the question is if the catalyst can also cause a higher backpressure in the exhaust system when it is clogged with soot or ash.
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