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Thread: DPF metrics

  1. #1
    Member SadClouds's Avatar
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    DPF metrics

    I'm playing around with VCDS and wanted to check the health status of DPF and see how clogged it was. A bit confused by various metrics it shows me:

    IDE00432 Particle filter: time since last regeneration 8274 s
    IDE00433 Particle filter: oil ash volume 0.06 l
    IDE00434 Particle filter: soot mass calculated 8.04 g
    IDE00435 Particle filter: soot mass measured -4.47 g
    IDE00436 Particle filter: kilometers since last regeneration 61598 m
    IDE06059 Particulate filter: oil ash mass 25.1 g
    IDE06060 Particulate filter ash load limit 80.00 g

    What's the difference between "particle filter" and "particulate filter"?

    What's the difference between "soot mass" and "oil ash mass"?

    Time since last regen is 8274 seconds (2.2 hours), but kilometers since last regen is 61598 miles (which was about a year ago). This seems completely contradictory, any ideas?
    2015 Golf 2.0 TDI-CR CRBC

  2. #2
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    The 61598 m is meters not miles so 61.5 Kilometers or about 40 miles.
    2013 Touran SE 2.0 TDI-CR (CFHC - D91) DSG (PBF -G1A) Acapulco Blue Metallic, Retro Fit Front Fog lights, Westfalia Detachable Towbar
    2015 Skoda Fabia SE (Mk3) 1.2 TSI(110) DSG Silver.
    1983 Austin Metro 1.3 HLE Arum White, 39,500 miles, owned from new.

  3. #3
    Member SadClouds's Avatar
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    OK, that makes sense now. Also not sure why "soot mass measured" is negative. I've had the car from new for 5 years and "oil ash mass" is 25g out of max 80g, so looks like DPF could last for another 10 years before ash limit is reached and it needs replacing.
    2015 Golf 2.0 TDI-CR CRBC

  4. #4
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    I monitored the DPF figures every week from Nov 16 to May 18, and the soot mass measured would be negative from time to time, but I never found a pattern apart from it was never negative if soot mass calc was > 10, if soot mass calc was < 10 then it might be negative and then only -0.05 to -0.31. I no longer have all the saved log files, and the only ash volume volume value I have is 0.07 l, which was at 81,000 miles and I didn't have any ash mass. Tomorrow's task I think.
    2013 Touran SE 2.0 TDI-CR (CFHC - D91) DSG (PBF -G1A) Acapulco Blue Metallic, Retro Fit Front Fog lights, Westfalia Detachable Towbar
    2015 Skoda Fabia SE (Mk3) 1.2 TSI(110) DSG Silver.
    1983 Austin Metro 1.3 HLE Arum White, 39,500 miles, owned from new.

  5. #5
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    Just run VCDS diagnostics on my Touran, my version of VCDS (19.6.2 20200210 DS30 doesn't have, or I couldn't find, the Particulate Filter Ash mass metrics. Ash Volume is now 0.08 L, and the mileage is 91,534 miles. I don't know what the ash capacity is of a DPF though, but it appears that the Ash volume increases by 0.01L every 10,000 miles approximately, be nice to have an indication of how long the DPF might last.
    2013 Touran SE 2.0 TDI-CR (CFHC - D91) DSG (PBF -G1A) Acapulco Blue Metallic, Retro Fit Front Fog lights, Westfalia Detachable Towbar
    2015 Skoda Fabia SE (Mk3) 1.2 TSI(110) DSG Silver.
    1983 Austin Metro 1.3 HLE Arum White, 39,500 miles, owned from new.

  6. #6
    Member SadClouds's Avatar
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    OK, so your Touran is from 2013, which is 2 years earlier than my Golf, so perhaps at that time they didn't have ash mass and load limit metrics. I think the engines are different, I have EA288 which they started using in 2015, you probably have the older version EA189 with different DPF sensors.

    If I understand this correctly, the ash volume/mass never go down, as DPF is regenerated, soot is burnt and turns into ash, which gets accumulated over time. Once the limit is reached, 80g in my case, you have to replace the entire DPF. No idea how much this costs, but hopefully when the time comes, the car would need to be scrapped anyway. This is the reason I never fill my car with with anything but BP Ultimate diesel and stopped using VW dealer oil servicing, I want low ash Mobil 1 ESP every time and nothing else.
    2015 Golf 2.0 TDI-CR CRBC

  7. #7
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    Out of curiousity how many miles has you Golf done? I noticed that your Ash volume was 0.06L, 0.02 lower than mine, so if my rule of thumb holds good would your mileage be between 50,000 and 60,000? I only use Shell Vpower diesel for the same reason you use BP Ultimate. Must admit though that my independent garage uses VW Quantum oil - I know its VW spec but what its Ash contribution is I've no idea.
    2013 Touran SE 2.0 TDI-CR (CFHC - D91) DSG (PBF -G1A) Acapulco Blue Metallic, Retro Fit Front Fog lights, Westfalia Detachable Towbar
    2015 Skoda Fabia SE (Mk3) 1.2 TSI(110) DSG Silver.
    1983 Austin Metro 1.3 HLE Arum White, 39,500 miles, owned from new.

  8. #8
    Member SadClouds's Avatar
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    As of today, 75536 miles. I don't think they state ash content for Quantum oil, they say it's low ash, but no actual values. Mobil1 state "Sulfated Ash, mass%, ASTM D874 = 0.8", so I assume Quantum and Castrol would be the same.
    2015 Golf 2.0 TDI-CR CRBC

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    Administrator Crasher's Avatar
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    Quantum is now made by Fuchs, all of it as far as I have been told.
    "I disapprove of what you say, but I will defend to the death your right to say it"

    Evelyn Beatrice Hall (28 September 1868 13 April 1956)

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