Clean the particle filter yourself: Instructions & Co.


If your soot particle filter is clogged and you therefore visit a workshop with your diesel, you are often recommended to replace the filter. However, replacing a DPF is very expensive (depending on the model €600 up to €2500). For this reason, cleaning the particle filter makes sense in certain cases. We will now explain how you can clean your particle filter yourself!

What do I need for cleaning?

Important: We recommend only experienced screwdrivers to clean the soot particle filter themselves. If you are unsure, please consult a specialist!

Step-by-step instructions for cleaning the particle filter

  • Allow the exhaust system to cool down completely
    • Leave your vehicle for at least an hour before cleaning so that the exhaust system can cool down completely.
    • In this way you avoid stress cracks when the cold agent is injected.
  • Free the soot particle filter
    • In order to be able to fill the cleaning agent into the filter, you must first free it from other car parts that may be blocking the DPF.
    • Also remove any sensors that are attached.
  • Insert the hose on the container into the opening
    • Next, insert the small hose from the detergent through one of the holes in the particle filter.
  • Fill in detergent – Follow the manufacturer’s instructions exactly for this step!
    • Before you fill in the cleaning agent, you should shake the can well.
    • Spray the agent into the filter for 5 seconds at a time of 5-10 seconds.
    • Rotate the probe while spraying to get the detergent everywhere.
    • Repeat this until the can is completely empty.
  • Screw the sensors back in
    • Next, the sensors that you previously unscrewed must all be installed again.
  • Reset learning values ​​so that the probes no longer think that the soot filter is full
    • As soon as everything is back in its place, you can use a diagnostic device to reset the learned values.
    • If you don’t do this, the on-board computer will continue to think that the DPF is clogged.
    • You may also have to start the regeneration manually.
  • Perform regeneration and test drive
    • Finally, leave your car outside for 15 minutes with the engine running.
    • Then it is best to drive again at high speed on the motorway for about half an hour to burn out the filter.

Here you will find the instructions for cleaning again clearly as a PDF:
ATP_Blog_Particle filter cleaning_PDF

Advantages and disadvantages of cleaning agents for soot particle filters:

advantages Disadvantages
Can be done by yourself No reliable long-term prognosis
Little expenditure of time Soot is removed but ash remains
Cheaper than workshop or exchange Chemicals can affect filter structure

A notice: The long-term effect of the cleaning agents has not been proven. In any case, the DPF is cleared of soot for a short time, but the ash is not completely removed by the chemicals and remains in the filter.

What cleaning procedures are used in the workshop?

Two different forms of cleaning are carried out in the workshop:

Chemical cleaning of the soot particle filter

The particle filter is flushed with a special solvent.
A steam jet is often used in addition.
Particular caution is required here: just like the chemicals, the use of a steam jet can also destroy the structure of the filter.

Particulate filter: Mechanical cleaning

This method uses high temperatures. The DPF is placed in a kiln at temperatures between 500 and 600 degrees Celsius. The soot residues are burned in the filter during this process. What is left is ashes.
This process takes at least 5 hours, but can also extend over several days. The resulting ash is then removed with compressed air.

It is up to you whether you have your diesel particle filter replaced in the workshop, remove the soot yourself with cleaning agents or have it professionally cleaned.

If cleaning no longer makes sense, you can also get cheap new ones from us particulate filter order.

We hope this information helped you make your decision. Have you ever cleaned your particle filter yourself? Do you have any other tips? Just write us in the comments. We wish you every success and a safe journey at all times!


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