DPF workaoround - MBWorld.org Forums

Jun 17, 2020 | 04:59 AM

sorcer

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c250 2.2 cdi

DPF workaoround

I'm searching for a way to trick the ecu to sense that there is no soot in DPF and doesn't need to start regeneration.
As I seen the c250 cdi w204 has only 2 sensors on DPF , one differential pressure sensor and one temperature sensor. So, if I can make the differential pressure sensor signal to have a certain value (like 0,01) and the temperature sensor signal have a certain temp reading( like 200 degrees) then the regeneration should not start ever right ?
Can anyone tell me how to find the sensor value that triggers regeneration ? Am I missing something ?

Jun 19, 2020 | 02:31 AM

sorcer

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c250 2.2 cdi

Any ideas on the subject ? nobody tried this before ?

Jun 19, 2020 | 06:58 AM

Gazwould

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S204 C250 CDI Sport

Ummm there's alot wrong here..

If you prevent regens the dpf will block .

Giving a differential pressure sensor too a low reading will make it think it has a leak and go into limp mode .

Jun 19, 2020 | 03:06 PM

sorcer

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Joined: Jun 2019

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c250 2.2 cdi

Quote:

Originally Posted by Gazwould

Ummm there's alot wrong here..

If you prevent regens the dpf will block .

Giving a differential pressure sensor too a low reading will make it think it has a leak and go into limp mode .

In normal working condition dpf differntial presure is between -0,01 and 0,02 acording to my readings with delphi ds150 .
Yes blocking regeneration will block dpf , but also can be a workaround if dpf is empty ( no ceramics inside).
Do you know if there is any other sensors that contributes to soot level calculation , or only the differential pressure sensor does the job ?

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