Latest cars are progressively furnished 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 cars. This is exactly the subject of our content page of the day, we are going to look at the problems of the lambda sensor on Mazda CX 5 , this sensor also known as oxygen sensor plays an necessary purpose. To find out, first, we are going to find out what a lambda probe is employed for, then, what are the lambda sensor problems on Mazda CX 5 and how to fix them.

lambda-sensor-problem-mazda-cx-5

What is a lambda purpose on Mazda CX 5?

So we start our content page with the interest of a lambda sensor on Mazda CX 5 , we will first see what is the task of this probe and then how it works.

Role of a lambda sensor on Mazda CX 5

First developed by Volvo in the 1970s, it began to appear on our cars in the 1990s with the first EURO 1 emission requirements. As well called oxygen sensor on Mazda CX 5 , its task is to control the amount of oxygen in the exhaust gases, this will enable the engine unit to change the air/fuel mixture to reduce the pollution emitted by the car and lower the car’s fuel consumption.

Lambda sensor operation on Mazda CX 5

Before explaining you the different problems of lambda probe on Mazda CX 5 , we will look a little more in outline at its functioning to allow you to understand precisely how it works and thus to consider more serenely the correction of a problem associated with it.
As we told you, a lambda probe has the task of controlling 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 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 interest 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 inserted into the engine unit to improve the combustion .

Lambda sensor issue on Mazda CX 5

.
Finally, we are now going to attack the section you are undoubtedly most interested in this content page, how to handle it if you have a lambda sensor issue on Mazda CX 5 . 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 Mazda CX 5 is HS

.
It is necessary 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 5, your driving, and the good working of your engine unit. A poorly looked after engine unit that emits unburned gases may completely corrupt your lambda sensor. One of the clues that can alert you of a defective lambda sensor on Mazda CX 5 may be the engine unit light turns on, if you want to turn off the engine light of your Mazda CX 5, do not think twice to seek advice from our dedicated content page to see the process to follow. The only effective way to be sure that you have a lambda sensor issue on your Mazda CX 5 and to pass your car to the diagnostic case, for that do not think twice to seek advice from our tutorial which explains you Mazda CX 5how to read the fault code of a Mazda CX 5. Please note that if you have problems with one of your lambda sensors, the just solution to resolve them will be to replace the defective sensor.

How to replace a lambda sensor on Mazda CX 5?

And finally, we are going to concentrate on the correction of lambda sensor problems on Mazda CX 5 , by describing how to replace a lambda sensor.

The replacement of a lambda sensor is quite simple to execute 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 defective the second one risks to drop you fairly quickly. To replace it, it will be required to put your Mazda CX 5 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 5.

If you need more tutorials on the Mazda CX 5, go to our Mazda CX 5 category.