Your FAP light is on and you don't know what the problem is. The FAP is mainly found for automobiles Diesel, even if we find them more and more for gasoline automobiles. Before starting repairs for the Volkswagen Jetta, it is important to know where this concern comes from. How does a FAP work? Why does the light go off? What are the most regular dysfunctions? During this file, we will go around the question. 
What is an FAP on your Volkswagen Jetta
As its name suggests, its role is to purify microscopic molecules harmful of the vehicle. The particles are so small that they easily enter your body. For your information, it is Peugeot who created this FAP. The catalyst is used to lower the quantity of molecules produced from the engine block, while the FAP collects the waste. It therefore seems essential to have an operational particle filter if you do not want the Volkswagen Jetta to pollute the environment.
Why the FAP indicator light on your Volkswagen Jetta
The FAP of your Volkswagen Jetta is clogged
Indeed, this is the most common concern. Indeed, a FAP clogs as time goes by. Molecules pile up and prevent the evacuation of your exhaust gases. Normally, the FAP on the Volkswagen Jetta will be able to clean itself automatically and expel this waste. Unfortunately, if it is particularly damaged it will have to be changed.
An electronic problem
The problem with the indicator lights is that we are not sure of the problem. In fact, it sometimes happens that an indicator light comes on while the Volkswagen Jetta is turning properly. This FAP has several electronic sounders which issue the warning in the direction of the dashboard. If your sensors do not work well while the FAP is working perfectly, the light may be on.
What to do if the FAP indicator on your Volkswagen Jetta comes on?
First of all, it is completely illegal to remove the particulate filter from your vehicle! It is considered an offense. You should check the sensors to see if they are working properly. If these work properly, the problem must come from the Particulate filter. If it was filthy, you can unclog it by driving on a diet for about 10 minutes. Without abusing it, it can damage the vehicle. We advise you to drive to 3000 rpm. The temperature of the engine block can therefore burn the dirt encrusted, and thus purify this FAP. In the event that this combination does not work well, you will have to replace it with a new one.
Conclusion:
Your damaged particle filter can pollute as well as decrease acceleration. It is essential to have it changed. Write a comment in case our text was useful. Enjoy the road!