Recent cars are increasingly furnished with new technologies, apart from the comfort of use it can bring, technology as well has the advantage of saving fuel or reducing the pollution emitted by our cars. This is precisely the subject matter of our content of the day, we are going to look at the complications of the lambda sensor on Audi A3 , this sensor as well known as oxygen sensor plays an necessary purpose. To find out, first, we are going to identify what a lambda probe is utilized for, then, what are the lambda sensor complications on Audi A3 and how to fix them.
What is a lambda role on Audi A3?
So we start our article with the benefit of a lambda sensor on Audi A3 , we will first discover what is the role of this probe and then how it functions.
Role of a lambda sensor on Audi A3
First created by Volvo in the 1970s, it began to show up on our cars in the 1990s with the first EURO 1 emission standards. As well called oxygen sensor on Audi A3 , its task is to control the amount of oxygen in the exhaust gases, this will enable the engine unit to modify the air/fuel mixture to lower the pollution emitted by the car and lower the car’s fuel consumption.
Lambda sensor procedure on Audi A3
Before describing you the different complications of lambda probe on Audi A3 , we will look a little more in outline at its functioning to allow you to understand exactly how it functions and thus to consider more serenely the correction of a problem related to it.
As we informed you, a lambda probe has the task of managing the amount of oxygen present in the exhaust gases . One could naively think that this data is calculated 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 standards there are now 2 lambda sensors, one before and one after the catalyst . The benefit is to have more exact 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 unit to optimize the combustion .
Lambda sensor issue on Audi A3
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At last, we are now going to attack the section you are obviously most enthusiastic about this article, how to proceed if you have a lambda sensor issue on Audi A3 . In a first step we will discover how to identify a lambda sensor HS and in a second step how to replace it.
How to know if a lambda sensor on Audi A3 is HS
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It is necessary to know that a lambda sensor has in general a lifetime of 150 000 km , this info can fluctuate according to the year of your Audi A3, your driving, and the good performance of your engine unit. A poorly taken care of engine unit that releases unburned gases may completely alter your lambda sensor. One of the clues that can warn you of a faulty lambda sensor on Audi A3 might be the engine unit light turns on, if you want to turn off the engine light of your Audi A3, do not hesitate to seek advice from our dedicated article to discover the process to stick to. The only effective technique to be certain that you have a lambda sensor issue on your Audi A3 and to pass your car to the diagnostic case, for that do not hesitate to seek advice from our tutorial which explains you Audi A3how to read the fault code of a Audi A3. Take note that if you have complications with one of your lambda sensors, the only remedy to resolve them will be to replace the faulty sensor.
How to replace a lambda sensor on Audi A3?
And finally, we are going to concentrate on the correction of lambda sensor problems on Audi A3 , by explaining how to replace a lambda sensor.
The replacement of a lambda sensor is quite simple to perform and you will have the ability to do it yourself with a lowest of tools and mechanical expertise. A lambda sensor is worth between 25 and 50€ , it is better to replace the 2 lambda sensors present upstream and downstream of your catalytic converter because if one of them is faulty the second one risks to drop you fairly quickly. To replace it, it will be necessary to put your Audi A3 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 Audi A3.
In the event that you have any further questions about the Audi A3, do not hesitate to consult our Audi A3 category.
