Recent automobiles are increasingly equipped with new technologies, apart from the comfort of use it can bring, technology also has the advantage of saving fuel or reducing the pollution emitted by our automobiles. This is precisely the subject matter of our content of the day, we are going to look at the problems of the lambda sensor on Audi A5 , this sensor also 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 problems on Audi A5 and how to resolve them.
What is a lambda task on Audi A5?
So we start our content page with the benefit of a lambda sensor on Audi A5 , we will first discover what is the task of this probe and then how it functions.
Role of a lambda sensor on Audi A5
First developed by Volvo in the 1970s, it began to show up on our cars in the 1990s with the first EURO 1 emission requirements. Also called oxygen sensor on Audi A5 , its mission is to regulate the amount of oxygen in the exhaust gases, this will enable the engine to modify the air/fuel mixture to lower the pollution emitted by the motor vehicle and reduce the car’s fuel consumption.
Lambda sensor process on Audi A5
Before describing you the different problems of lambda probe on Audi A5 , we will look a little more in outline at its working to allow you to figure out precisely how it functions and thus to consider more serenely the correction of a problem related to it.
As we told you, a lambda probe has the task of managing the amount of oxygen present in the exhaust gases . One could naively presume that this data is measured upstream of the combustion but it is on the contrary measured at the engine outlet . With the EURO 1 standard there was just one lambda sensor needed before the catalyst, but with the arrival of more drastic requirements 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 modify the quantity of air and gasoline injected into the engine to improve the combustion .
Lambda sensor issue on Audi A5
.
At last, we are now going to attack the section you are absolutely most interested in this content page, how to handle it if you have a lambda sensor issue on Audi A5 . In a first step we will see how to locate a lambda sensor HS and in a second step how to replace it.
How to know if a lambda sensor on Audi A5 is HS
.
It is important 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 A5, your driving, and the good functioning of your engine. A poorly maintained engine that releases unburned gases may completely corrupt your lambda sensor. One of the clues that can alert you of a defective lambda sensor on Audi A5 might be the engine light turns on, if you want to turn off the engine light of your Audi A5, do not hesitate to consult our dedicated content page to discover the process to stick to. The only effective way to be certain that you have a lambda sensor issue on your Audi A5 and to complete your car to the diagnostic case, for that do not hesitate to seek advice from our guide which explains you Audi A5how to read the fault code of a Audi A5. Please be aware that if you have problems with one of your lambda sensors, the just solution to correct them will be to replace the defective sensor.
How to replace a lambda sensor on Audi A5?
And at last, we are going to concentrate on the correction of lambda sensor problems on Audi A5 , by describing 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 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 defective the second one risks to drop you fairly quickly. To replace it, it will be necessary to put your Audi A5 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 problems with your lambda sensor on Audi A5.
Whenever you have any further questions about the Audi A5, do not hesitate to consult our Audi A5 category.
