A catalytic converter is an important part of contemporary cars, as it purifies your vehicle’s exhaust gases and thus fulfills modern pollution specifications. Nevertheless, it is possible that it may become clogged or breakdown, in which case a replace or cleaning is important. In this article we are going to look at how to clean a catalytic converter on Volkswagen Passat? To achieve this, first of all, we will show you the situations in which it might be interesting to clean the catalytic converter of your Volkswagen Passat, then, how to accomplish this cleaning to retrieve the effectiveness of the catalytic converter of your car.


Why would you want to clean up the catalytic converter of your Volkswagen Passat?

In this first section we will describe why it might be necessary to clean the catalyst of your Volkswagen Passat . In fact for some of you it might seem obvious but the majority of you do not know how it functions and the results dirty catalytic converter .

Role and functioning of the catalytic converter of a Volkswagen Passat

The catalytic converter of your Volkswagen Passat has the function to eliminate harmful exhaust gases related to the procedure of your engine unit. In fact, it is one of the main elements that fight against the pollution discharged by your Volkswagen Passat. It will transform these harmful gases into water or nonpolluting gases. In order to transform these gases, the catalyst of your Volkswagen Passat a mesh of precious metals which, when the gases pass at high temperature, will break them down by chemical reaction . A catalytic converter can just work from 400°, it is consequently essential to avoid clogging the catalytic converter of your Volkswagen Passat. If you are considering making enough long travels to heat it up regularly (count more than 10 kilometres for the catalyst to reach the right temperature), this will allow you to optimize the life of this element and maintain ideal engine unit performance.

Outcomes of a dirty or faulty catalytic converter on Volkswagen Passat

We will now discover what can be the results of a dirty or failing catalytic converter on Volkswagen Passat . This will allow you to detect the signs of illness that should notify you to a malfunction of your catalytic converter, here is the list of symptoms of a faulty catalytic converter:

  • The catalytic converter of your Volkswagen Passat is blocked: As we stated earlier, if you make too short journeys like 50% of people, it will not have the time to start working and the catalytic converter will clog up with exhaust gases.
  • Switching on the engine light: : Following a clogged catalytic converter, engine light of your Volkswagen Passat may come on, do not think twice to seek advice from our article to find out how to switch it off.
  • A faulty lambda sensor : The catalyst functions in close connection with the lambda sensors downstream and upstream of it, they will analyze the air flowing inside it, if it is clogged the sensors will often as well have problems.
  • A metallic noise coming from the exhaust: In case the catalyst is dead you should hear this noise which results in that the ceramic is damaged.

Why you should clean the catalytic converter of your Volkswagen Passat

Before we finish with the step you are probably most keen on, how to clean the catalytic converter of a Volkswagen Passat? We will describe why it might be relevant for you to accomplish this cleaning. In fact, a catalytic converter is a very expensive part (about 500 euros with the installation, the price can fluctuate according to the engines). Furthermore to being no longer good for passing the technical control , you might be at risk of over-consumption of fuel . Finally, the last interest is that cleaning a catalytic converter is not that expensive and doing it regularly will save you quite a lot of money.

How do you clean the catalytic converter from its Volkswagen Passat?

Finally here is the stage that you are probably most enthusiastic about in this content, how to clean the catalytic converter of your Volkswagen Passat? Know that this process is very very easy, and that there are two methods to do it:

  • Scrubbing the catalytic converter from your Volkswagen Passat frequently: This technique is specifically useful for people who specifically do short trips . To do this, nothing could be less complicated, from time to time, make a long trip (about 30 minutes to optimize the efficiency of the process), thinking of making your engine go up in revs so that the temperature in the catalyst increases and it can be cleaned.
  • To use a catalyst cleaner: You can locate some in a motor vehicle center for about 20 euros. All you have to do is add it to your fuel straight in your tank with about half a full tank. Afterwards you will have to drive on a long distance for at least 1 hour at mid-range by trying to go regularly at high rpm . If you can before and later on do an exhaust gas analysis to examine that you have recovered healthier exhaust fumes after the procedure. You can accomplish this procedure every 15 000km.


In the event that you have any further questions about the Volkswagen Passat, do not hesitate to consult our Volkswagen Passat category.