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Dreaded dpf

Discussion in 'Audi S4/A4/A4 Cab (B7 Chassis)' started by Chuck32, Mar 22, 2014.

  1. Chuck32
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    Chuck32 New Member

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    Alright folks. Got a 2007 a4 2.0tdi, engine code BRD r4. Got Dtc 008194 (particulate trap bank1) p2002 - 006 efficiency below threshold. Have followed Ross tech wiki to manually regenerate car. Soot was up at 130ish and managed to get it to 20%. Can't get it any lower. Could anyone tell me how to get it to force regen through vcds? I don't have the security/access key for it. Think that's all that's holding me back. Thanks in advance.
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  2. desertstorm
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    desertstorm Well-Known Member

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    Is it not the first part of this document that describes how to regen it.
    Diesel Particle Filter Emergency Regeneration - Ross-Tech Wiki

    How many miles has the car done?. It's not always possible to get it down to zero as there is usually a build up of ash that cant be burnt off. especially if there has been an issue with the car or it has not regenerated for a long time. Unfortunately DPF's don't last forever.

    Karl.
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  3. Chuck32
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    Chuck32 New Member

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    It was the top part I followed and could only get it to 40% but then when I go to retry it's at 20ish% until I start and it goes back up. The dtc will erase but appears straight away. I was told the lights won't reset until soot mass is under 10% that's why I wanted to do a forced regen by vcds. I work with nissan and you just hit the regen button for that,nice and simple. I tried to trick ecu into thinking dpf was replaced but the value is already at 0. I thought if done a forced regen and it still failed I'd replace the g450 sensor but since there is no dtc for it,that was last resort.
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  4. Chuck32
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    Chuck32 New Member

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    Or is the forced regen done through the manual depending there the 1 sits on the measuring block? Just re read the wiki link
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  5. Chuck32
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    Chuck32 New Member

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    Sorry forgot to say it's at 118k. A friend wanted me to try sort it. I'm still b6 20vT,much less hassle,haha.
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