Latest cars are increasingly pre-loaded with new technologies, apart from the comfort of use it can provide, technology also has the advantage of saving fuel or reducing the pollution emitted by our cars. This is exactly the subject matter of our content of the day, we are going to look at the problems of the lambda sensor on Mercedes A class , this sensor also named oxygen sensor plays an essential role. 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 Mercedes A class and how to resolve them.
What is a lambda task on Mercedes A class?
So we start our content page with the benefit of a lambda sensor on Mercedes A class , we will first see what is the role of this probe and then how it works.
Role of a lambda sensor on Mercedes A class
First produced by Volvo in the 1970s, it began to show up on our cars in the 1990s with the first EURO 1 emission standards. Also called oxygen sensor on Mercedes A class , its task is to control the amount of oxygen in the exhaust gases, this will allow the engine unit to adapt the air/fuel mixture to lower the pollution emitted by the motor vehicle and lower the car’s fuel consumption.
Lambda sensor procedure on Mercedes A class
Before describing you the different problems of lambda probe on Mercedes A class , we will look a little more in outline at its working to allow you to figure out precisely how it works and thus to consider more serenely the correction of a problem related to it.
As we explained to you, a lambda probe has the job of managing the amount of oxygen present in the exhaust gases . One could naively believe 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 standards there are now 2 lambda sensors, one before and one after the catalyst . The benefit 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 inserted into the engine unit to improve the combustion .
Lambda sensor issue on Mercedes A class
.
Finally, we are now going to attack the part you are undoubtedly most keen on this content page, what to do if you have a lambda sensor issue on Mercedes A class . In a first step we will find out how to locate a lambda sensor HS and in a second step how to change it.
How to know if a lambda sensor on Mercedes A class is HS
.
It is essential 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 Mercedes A class, your driving, and the good functioning of your engine unit. A poorly taken care of engine unit that produces unburned gases may forever corrupt your lambda sensor. One of the clues that can warn you of a defective lambda sensor on Mercedes A class may be the engine unit light comes on, if you want to turn off the engine light of your Mercedes A class, do not hesitate to consult our dedicated content page to see the procedure to stick to. The only effective technique to ensure that you have a lambda sensor issue on your Mercedes A class and to complete your car to the diagnostic case, for that do not hesitate to consult our guide which explains you Mercedes A classhow to read the fault code of a Mercedes A class. Please be aware that if you have problems with one of your lambda sensors, the just remedy to correct them will be to change the defective sensor.
How to change a lambda sensor on Mercedes A class?
And at last, we are going to focus on the correction of lambda sensor problems on Mercedes A class , by detailing 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 knowledge. 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 quickly. To replace it, it will be necessary to put your Mercedes A class 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 Mercedes A class.
If perhaps you have any additional questions about the Mercedes A class, do not hesitate to consult our Mercedes A class category.
