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Cleaning the DPF (Diesel Particulate Filter)

Model: Renault Laguna MK 2, X74, Laguna 2 - Years: 2001, 2002, 2003, 2004, 2005, 2006, 2007
Part: Diesel particulate filter

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If the DPF (Diesel Particulate Filter) is particularly clogged, to the point that normal regenerations are ineffective, you can opt for a forced regeneration, which is a sort of cleaning of the filter using a special kit that includes, in addition to additives, a specific compressed air gun that must be connected at the differential pressure sensor on the DPF itself.

It is recommended to perform the operation in a well-ventilated area or, in any case, to connect the exhaust hose to a fume extraction system.

Once the gun hose is connected in place of the differential pressure sensor, start the engine and maintain it at around 3,000 RPM; inject the cleaning additive with the gun until it is completely emptied: a white cloud will exit from the exhaust pipe.

Finally, reset the fault memory of the engine management ECU using diagnostic equipment.


Updated on 8 February 2026 by ScegliAuto


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