DPF ash limit/capacity - Page 2 - Club Touareg Forums
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post #11 of 30 Old 05-23-2019
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[QUOTE=Gnits;2050449]There's no dedicated function for that. You've to read the appropriate measurement block values (MVBs) to learn them. But those blocks are at different locations depending on the engine model.

Thanks for the update. So how do I find out which block to use, will Ross-Tech be able to help me?

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post #12 of 30 Old 05-23-2019 Thread Starter
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Quote:
Originally Posted by TouaregNut View Post
Thanks for the update. So how do I find out which block to use, will Ross-Tech be able to help me?
Maybe. Or you could check the well-known locations of other engines (like MVB 75, MVB 108 or MVB 068 ) to see whether the values in yours look like they would be possibly DPF soot and ash levels.


What's your engine code? And what's the "Part No" the VCDS log shows for your ECU?
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post #13 of 30 Old 05-23-2019
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Quote:
Originally Posted by Gnits View Post
Maybe. Or you could check the well-known locations of other engines (like MVB 75, MVB 108 or MVB 068 ) to see whether the values in yours look like they would be possibly DPF soot and ash levels.


What's your engine code? And what's the "Part No" the VCDS log shows for your ECU?
Control Module part No: 070906016CQ HW 0281011962

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post #14 of 30 Old 05-29-2019
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Guys interesting find. I was able to find some sending units between 76 and 108 with no tags, some were giving me bit reading, while others were giving me temp and pressure readings. I still have to record/shave the information to see what it is but wanted to run by you in-case you have encountered it before. I called Ross-Tech and they told me they have no information for ID's beyond 76 so I am at a loss.

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post #15 of 30 Old 05-29-2019 Thread Starter
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1. Log all the blocks
2. Drive 1-2000 miles
3. Log all the blocks again
4. Compare blocks in 1 and 3 to see which one of the MVBs has increased by a few units (or if it's a sub 1.0 value, then a few hundredths), and is not marked as temp, injection quantity, etc values.
That will be your DPF ash mass/volume counter. It's also usually accompanied by a percentage value in the same group, which marks the current soot level.
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post #16 of 30 Old 06-04-2019
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Today I ran group 068 for both engine 1 & 2
Engine 1
Duty cycle - no unit - duty Cycle
4.7%. - 80 - 0
So I guess the ash is 80gm.

Engine 2
All values are zero.

So there is definitely something weird. I have put 178k miles on the Treg and there is nothing on bank2 where as bank 1 is reading 80. Now I am not complaining about bank 2, but the check engine light that comes on like clock work, after every third regen cycle, is bugging me. I am taking the beast to the vw dealer (the one I detest the most) for diagnosis only, the other dealer could not find anything wrong even though he saw the fault code. I wish I lived in a half decent state aaaaaagh.........

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post #17 of 30 Old 06-04-2019 Thread Starter
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Quote:
Originally Posted by TouaregNut View Post
Engine 2 All values are zero. So there is definitely something weird. I have put 178k miles on the Treg and there is nothing on bank2 where as bank 1 is reading 80.
That's not the second bank you're reading there. The DPF values for the second bank are located at MVB 075 in ECU 1. It must show similar values to your first one, because obviously both 5-cylinder banks generate about the same amount of soot and then ash. Unless of course there is (or at some point was) something wrong with one of the banks or the DPFs.
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post #18 of 30 Old 06-04-2019
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Quote:
Originally Posted by Gnits View Post
That's not the second bank you're reading there. The DPF values for the second bank are located at MVB 075 in ECU 1.
I will check that, I was using 068 as suggested by Ross-tech for both engine 1 an 2

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post #19 of 30 Old 06-04-2019
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Oh yeah I remember, I ran 075 on engine 1 & 2, it was giving me temps in position 1 and 3. Both temps were within 20 deg of each other.

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post #20 of 30 Old 06-07-2019
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On my 2006 V10 (NA) it is necessary to check both 01 and 11 addresses to see both banks. Either 068 or 075 will show dpf values. I always try to get the rpm’s up around 2200 on my long trips tp get the passive regeneration going. After yesterday’s 700 mile drive ro CO my soot was at 0% and ash at 48 grams on both ecu’s. Pretty good for 127 miles, eh? I’m afraid the cam/lifter failure is coming one of these day’s though.

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ash , capacity , dpf , load , touareg

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