Modern automobiles are more and more furnished with new technologies, apart from the comfort of use it can provide, technology as well has the advantage of saving fuel or reducing the pollution emitted by our automobiles. This is exactly the subject matter of our article content of the day, we are going to look at the complications of the lambda sensor on Volkswagen Polo , this sensor as well known as oxygen sensor plays an important function. To find out, first, we are going to find out what a lambda probe is utilized for, then, what are the lambda sensor complications on Volkswagen Polo and how to solve them.

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What is a lambda role on Volkswagen Polo?

So we start our article with the interest of a lambda sensor on Volkswagen Polo , we will first discover what is the role of this probe and then how it functions.

Role of a lambda sensor on Volkswagen Polo

First produced by Volvo in the 1970s, it began to show up on our cars in the 1990s with the first EURO 1 emission specifications. Also called oxygen sensor on Volkswagen Polo , its mission is to control the amount of oxygen in the exhaust gases, this will enable the engine to adapt the air/fuel mixture to decrease the pollution emitted by the motor vehicle and reduce the car’s fuel consumption.

Lambda sensor procedure on Volkswagen Polo

Before describing you the different complications of lambda probe on Volkswagen Polo , we will look a little more in detail at its operation to allow you to understand precisely how it functions and thus to consider more serenely the correction of a problem associated with it.
As we informed you, a lambda probe has the job of controlling the amount of oxygen present in the exhaust gases . One could naively think that this data is determined upstream of the combustion but it is on the contrary measured at the engine outlet . With the EURO 1 standard there was only one lambda sensor required before the catalyst, but with the arrival of more drastic specifications there are now 2 lambda sensors, one before and one after the catalyst . The interest is to have more precise data by compiling the two probes. These data are sent to the ECU which will adapt the quantity of air and gasoline injected into the engine to optimize the combustion .

Lambda sensor problem on Volkswagen Polo

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At last, we are now going to attack the part you are obviously most enthusiastic about this article, what to do if you have a lambda sensor problem on Volkswagen Polo . In a first step we will find out how to identify a lambda sensor HS and in a second step how to change it.

How to know if a lambda sensor on Volkswagen Polo is HS

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It is important to know that a lambda sensor has generally speaking a lifetime of 150 000 km , this statistics can fluctuate according to the year of your Volkswagen Polo, your driving, and the good performance of your engine. A poorly taken care of engine that emits unburned gases may permanently damaged your lambda sensor. One of the clues that can warn you of a defective lambda sensor on Volkswagen Polo may be the engine light turns on, if you want to turn off the engine light of your Volkswagen Polo, do not think twice to visit our dedicated article to discover the process to follow. The only effective technique to make sure that you have a lambda sensor problem on your Volkswagen Polo and to pass your car to the diagnostic case, for that do not think twice to consult our guide which explains you Volkswagen Polohow to read the fault code of a Volkswagen Polo. Please note that if you have complications with one of your lambda sensors, the only remedy to resolve them will be to change the defective sensor.

How to change a lambda sensor on Volkswagen Polo?

And finally, we are going to concentrate on the correction of lambda sensor problems on Volkswagen Polo , by explaining how to replace a lambda sensor.

The replacement of a lambda sensor is quite very easy to carry out and you will be able to do it yourself with a minimum of tools and mechanical know-how. A lambda sensor is worth between 25 and 50€ , it is better to change the 2 lambda sensors present upstream and downstream of your catalytic converter because if one of them is defective the second one risks to drop you fairly quickly. To replace it, it will be required to put your Volkswagen Polo on candles and at the level of your catalyst unscrew your probes, disconnect them, reconnect them and screw the new ones . Once re-connected, you should not have any more complications with your lambda sensor on Volkswagen Polo.

If perhaps you have any further questions about the Volkswagen Polo, do not hesitate to consult our Volkswagen Polo category.