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Re: Particulate filter error resulting in MIL light
Saving a few dollars on not using genuine oil sounds like it could turn out to be an expensive choice! Like they say in the army - look after your equipment and it will look after you!
It shouldn't occur if you only get your car serviced at Nissan like I do!
2 tanks of ultimate diesel later and I have not had any more dpf light issues. Car also seems to run alot better.
Not all servos have it yet - the BP run stores have it but the franchises don't yet. The one I have spoken too say that it is coming soon.
It will be interesting to see if the other brands offer a higher cetane, non bio diesel.
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Current - '08 T31 Platinum TL Diesel Manual
Mats, Boot Liner, Roofies, Spotties, Tint, Nudgebar, Tow Kit, Bash Plate, Yoko GO12 AT-S, Forum stickers.HiTech Twins, LED Mirrors, Bonnet Protector, LED steps
Old - '04 T30 Ti-L Auto
X-966
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5/Jun/2009, 9:16 pm
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Re: Particulate filter error resulting in MIL light
Dronus - do you know if the regen cycles are logged ?
I also have an inkling that with the 'cleaner' diesel, long run (high mileage) vehicles, the 10k interval can be stretched - I have in 28,000kms only had the 1k(at 2k), 10k(at 13k) and 20k(at 27k) - more because I have been busy - but I do check the oil colour on the dipstick and it has been very clean for a diesel.
John
--- TL dc i, manual, twilight; bash plate, jaos strut bar, BFGs' on 16x7 rims, factory tow bar & roof bars
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6/Jun/2009, 11:34 am
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Re: Particulate filter error resulting in MIL light
Hi John,
I will check with my contact at NISSAN to see if the cycles are logged.
It is my understanding that they are not logged, only when the MIL light appears it logs a fault.
I am also wondering if the DPF regeneration is, in fact, a constantly occurring sequence or if it waits until a certain level is reached before the cycle starts.
It was explained to me that it is a constant sequence and it doesnt wait, i wonder if this acctually happons, or if there is a glitch in the initial monitoring samples.
I am still working on finding out what signals the ECU does understand, and how the DPF and the ECU 'chat' to instigate regeneration cycles and levels.
It will be pretty cool to be able to intercept the chat and translate it into a graph, or % LCD display. I reakon NISSAN should be doing this and implementing it across their fleet of DPF equipped vehicles. Ill see what i can find and see if its possible to prototype something.. not much time on my hands these days.
If someone can give me some real world technical info or background on the T31 regeneration sequence i would sure appreciate it!
-dronus
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Current - '08 T31 Platinum TL Diesel Manual
Mats, Boot Liner, Roofies, Spotties, Tint, Nudgebar, Tow Kit, Bash Plate, Yoko GO12 AT-S, Forum stickers.HiTech Twins, LED Mirrors, Bonnet Protector, LED steps
Old - '04 T30 Ti-L Auto
X-966
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7/Jun/2009, 10:35 pm
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Re: Particulate filter error resulting in MIL light
Agreed - more realtime feedback even via a series of LED banks would be useful.
Be interested in your findings
John
--- TL dc i, manual, twilight; bash plate, jaos strut bar, BFGs' on 16x7 rims, factory tow bar & roof bars
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8/Jun/2009, 10:07 pm
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Re: Particulate filter error resulting in MIL light
Hi all,
We have just completed 10,000km service. There were no errors recorded. This means that only when the MIL light appears does the ECM log an error.
Further to this they are unable to determine how many regeneration cycles have occurred.
Given that our DPF light had come on several times this meant that what we did following its occurrance ie drive over 70 kph for approx 10 minutes cleared the DPF adequately,allowing us to cover another 300 kms of city work and as far as Nissan are concerned, does not present any problems.
Since using the Bp ultimate the DPF error has not occurred and Nissan passed on that feedback to head office.
During the service I asked for and did get a printout of the ECM status surrounding the DPF. On the printout was the Diff exh pressure(61hPa), Exh gas temp1(112'C), Exh Gas temp2(73'C).
These results were provided using consult3 software . This will give me a reference at the next service as to DPF status, that is until Dronus and I get our way with the real time LCD dash feedback. As an aside the service guy said that the service took a long time due to an extensive period of our car talking via the internet to head office service. My hunch is a software patch was loaded as there appears to have had a system reset.
(Trip meter radio presets).
Further to this following the service, the fuel consumption figure recently went suddenly high ,over 8.2 lpkm and within 10 kms (same driving). I figured it was getting ready for a regeneration (remember at this point no DPF light) and when I went over 70 kph for 10 mins it droped down to 7.1 again and remained there for the next week of driving.
When I reset the fuel consumption when I notice this (and it has only occurred once ) it showed very high values 10- 12 lpkm but after its 70 kph burst its rapidly dropped and has been fine for a lot of city driving again with the fuel consumption 7 lpkm again. (ie if reset never gets above 7.4 after 5kms)
I can only guess that there has been a slight modification to the regeneration process but i'm only guessing however I feel it's occurring at a lower speed. The Nissan service said they dont know of any undates etc but its all done via servicing and connecting computer (consult3 ),and car to head office. It looks to me that your local service guy is out of the picture concerning software issues with this motor. The uploaded information is probably giving Nissan all the info they need.
Given the discussion on DPF and oil I provided my own Castrol SLX Professional OE SAE 5w-30 API SM/CF ACEA A3/B3/B4/C3 Part no 119563 ($9.60 pl), 20 litres and they changed the oil filter etc etc. total service cost inc GST $202
I choose not to use the Genuine Nissan firstly cause it was bloody expensive ($16.50 per litre ) and they did not know what it was but said it was suitable for our car.
Our provided oil appears to be quite specific for vehicles fitted with DPF devices, and they were happy to use it, verifying the customer supplied oil on the service sheet
Edit Spelling/ grammar/ clarification... I should re read before posting ... Mark 
Last edited by Apis1, 17/Jun/2009, 10:44 am
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16/Jun/2009, 11:15 pm
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Re: Particulate filter error resulting in MIL light
Kev - exactly what i was thinking we just need to work out what form the signals are in (analogue or digital) and how we can intercept them to interpret.- sorry i have been off the site for a few weeks with real life getting hectic.
I have been using the BP Ultimate now all the time and have not had a single DPF light come back on. Performance has been really good, and the economy is impressive.
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Current - '08 T31 Platinum TL Diesel Manual
Mats, Boot Liner, Roofies, Spotties, Tint, Nudgebar, Tow Kit, Bash Plate, Yoko GO12 AT-S, Forum stickers.HiTech Twins, LED Mirrors, Bonnet Protector, LED steps
Old - '04 T30 Ti-L Auto
X-966
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25/Jun/2009, 7:35 pm
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Re: Particulate filter error resulting in MIL light
We definitely need to catch up while im over there Kev! Should be a fairly simple circuit yeah?
Either a series of LED's or even better a LCD display that can display 00-99.
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Current - '08 T31 Platinum TL Diesel Manual
Mats, Boot Liner, Roofies, Spotties, Tint, Nudgebar, Tow Kit, Bash Plate, Yoko GO12 AT-S, Forum stickers.HiTech Twins, LED Mirrors, Bonnet Protector, LED steps
Old - '04 T30 Ti-L Auto
X-966
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11/Jul/2009, 11:28 am
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Re: Particulate filter error resulting in MIL light
Hi All,
I have very recently experienced the same issue.
I have a 12 month old TS Dci Diesel Manual. I do a lot of open road driving, a good mix of city/country stuff. Car now has around 23k on the clock.
Yesterday the DPF light came on and later the MIL.
Took it to a Nissan dealer this morning. They claim it's due to using 'incorrect' oil. I have my car serviced by my long time mechanic who has used 15w-40 full synthetic (turbo diesel rated oil) on the two services so far. Reading through this thread, it seems there could be a number of reasons for the DPF problem. They are suggesting the DPF needs replacing..at a cost of $1,700 plus labour! (claim it will not be covered by warranty due to oil).
I have asked them to perform a regen tomorrow first...they say they are sure it will not solve the problem.
When I picked up the car brand new 12 months ago I was told to drive it as per a petrol car...no different. (This is my first diesel car).
As you can imagine I am very frustrated by what has happened and the potential cost to fix if the DPF needs replacing. Maybe the oil has something to do with it, but I am not entirely convinced...perhaps being used as a convenient cop out by Nissan.
Any thoughts/suggestions/ moral support would be greatly appreciated.
Regards,
Tony.
Last edited by tonylip, 12/Nov/2009, 8:00 pm
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12/Nov/2009, 7:58 pm
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