The indicator on your DPF lights up and you do not know what caused the malfunction. FAP is mainly found on cars Diesel, even if they can be found today on gasoline automobiles. Just before you start repairs on this smart roadster, it is essential to know what the problem is coming from. What is the role of a FAP? Why does the indicator light come on? What are the most common problems? In this article, we will cover the issue. 
What is a FAP used for on your smart roadster
As its name presages, it is used to filter microscopic molecules harmful of your car. These kinds of molecules are so small that they can easily enter our body. It is also Peugeot who made the FAP. Your catalyst has the role of restricting the level of molecules produced by the engine, then the FAP collects the rest. It is therefore fundamental to have a particulate filter in good working condition in case you no longer want this smart roadster to pollute.
Why the FAP indicator lights up on your smart roadster
The FAP of your smart roadster is clogged
This is the most recurring dysfunction. In fact, a FAP becomes blocked as time passes. These molecules pile up and then prevent the evacuation of exhaust gases. A priori, the FAP on this smart roadster should clean itself automatically and thus expel the clumps. That said, if it is too damaged it is essential to change it.
An electronic problem
The problem with these indicator lights is that we are not sure of the malfunction. In fact, it frequently appears that a warning light flickers while this smart roadster works perfectly. The FAP has a few electronic probes which send the signal to your indicator light. If these probes do not work well while this FAP is going well, it is likely that the indicator light comes on.
What to do if the FAP indicator on your smart roadster lights up?
First of all, it's completely forbidden to remove the fap from your smart roadster! Indeed, it is considered a crime. You can check the sounders to see if they are working well. If these ever work well, the problem comes from the FAP. If it is filthy, you will be able to clean it by driving on a diet for about ten minutes. Do not climb too much into the towers, this could damage the car. It is advisable to drive at 3000 rpm. The engine temperature should therefore carbonize the encrusted soot and purify the FAP. If such a method does not work, it must be replaced by a new one.
Conclusion:
Your fap in poor condition will pollute and reduce the power of the vehicle. It is therefore essential to replace it. Leave a comment in case our article was useful to you. Enjoy the road!