Modern vehicles are progressively 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 vehicles. This is exactly the subject of our article of the day, we are going to look at the problems of the lambda sensor on Mazda CX 9 , this sensor as well known as oxygen sensor plays an important role. To find out, first, we are going to find out what a lambda probe is used for, then, what are the lambda sensor problems on Mazda CX 9 and how to fix them.
What is a lambda task on Mazda CX 9?
So we start our article with the interest of a lambda sensor on Mazda CX 9 , we will first see what is the task of this probe and then how it works.
Role of a lambda sensor on Mazda CX 9
First developed by Volvo in the 1970s, it began to appear on our cars in the 1990s with the first EURO 1 emission standards. Also called oxygen sensor on Mazda CX 9 , its mission is to control the amount of oxygen in the exhaust gases, this will allow the engine to change the air/fuel mixture to decrease the pollution emitted by the motor vehicle and lower the car’s fuel consumption.
Lambda sensor procedure on Mazda CX 9
Before describing you the different problems of lambda probe on Mazda CX 9 , we will look a little more in detail at its operation to allow you to discover exactly how it works and thus to consider more serenely the correction of a problem associated with 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 believe 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 standards 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 modify the quantity of air and gasoline inserted into the engine to improve the combustion .
Lambda sensor problem on Mazda CX 9
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Finally, we are now going to attack the section you are absolutely most enthusiastic about this article, what to do if you have a lambda sensor problem on Mazda CX 9 . In a first step we will find out how to find a lambda sensor HS and in a second step how to replace it.
How to know if a lambda sensor on Mazda CX 9 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 data can vary according to the year of your Mazda CX 9, your driving, and the good functioning of your engine. A poorly looked after engine that releases unburned gases may completely damaged your lambda sensor. One of the clues that can warn you of a faulty lambda sensor on Mazda CX 9 might be the engine light turns on, if you want to turn off the engine light of your Mazda CX 9, do not hesitate to consult our dedicated article to see the procedure to follow. The only effective method to make sure that you have a lambda sensor problem on your Mazda CX 9 and to complete your car to the diagnostic case, for that do not hesitate to consult our guide which explains you Mazda CX 9how to read the fault code of a Mazda CX 9. Please be aware that if you have problems with one of your lambda sensors, the only remedy to correct them will be to replace the faulty sensor.
How to replace a lambda sensor on Mazda CX 9?
And at last, we are going to concentrate on the correction of lambda sensor problems on Mazda CX 9 , by describing how to replace a lambda sensor.
The replacement of a lambda sensor is quite basic to execute and you will have the ability to do it yourself with a minimal of tools and mechanical knowledge. 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 Mazda CX 9 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 Mazda CX 9.
If you have any further questions about the Mazda CX 9, do not hesitate to consult our Mazda CX 9 category.
