Your FAP warning light goes off and you don't know where the problem is coming from. FAP is found more in cars Diesel, even though they can be found more and more in gasoline automobiles. Before attempting repairs in this Toyota Prius 4, it's wiser to know where the problem came from. How does a particle filter work? Why does the light go on? What can be the most common problems? During this dossier, we will go around the subject. 
What is a DPF on your Toyota Prius 4 for?
As its name suggests, its role is to purify microscopic molecules harmful of the motor. These particles are so tiny that they easily enter our body. It is also Peugeot who developed the particulate filter. The role of the catalyst is to reduce the quantity of molecules produced from the engine block, while the particle filter collects the surplus. It is therefore essential to have a FAP in good condition if you do not want this Toyota Prius 4 to pollute.
Why the FAP indicator light on your Toyota Prius 4
The FAP of your Toyota Prius 4 is clogged
This is the most common problem. No worries, your particle filter becomes clogged over time. These molecules form clusters and hinder the circulation of exhaust gases. Normally, the particle filter of this Toyota Prius 4 can be cleaned alone and thus make this soot disappear. However, if the latter is old it must be replaced.
An electronic problem
The problem with these indicator lights is that we are not necessarily certain that there is a problem. Indeed, it frequently appears that an indicator light flickers while this Toyota Prius 4 is turning properly. The particle filter has several electronic sensors that send the message to your dashboard. When these sounders do not work well while your particle filter works perfectly, it is conceivable that your indicator will go on.
What to do if the FAP indicator light on your Toyota Prius 4 lights up?
First, it is absolutely forbidden to remove the fap on your vehicle! Indeed, it is considered a crime. You will need to check the sounders to see if they are working well. Assuming they work perfectly, the concern must come from the FAP. If the latter is dirty, you can clean it by driving in the towers for 10 to 15 minutes. Do not climb too much into the towers, this may damage the vehicle. It is advisable to drive at 3000 rpm. The engine block temperature should burn out the encrusted soot and clean the particle filter. In the event that such a combination is still not suitable, it must be changed.
Conclusion:
Your damaged particle filter will pollute as well as decrease acceleration. It is therefore essential to have it changed. Leave a comment if our file has ever been useful. Good road !