Recent automobiles are progressively 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 released by our automobiles. This is precisely the subject of our article of the day, we are going to look at the complications of the lambda sensor on BMW X4 , this sensor as well named oxygen sensor plays an important role. To find out, first, we are going to find out what a lambda probe is employed for, then, what are the lambda sensor complications on BMW X4 and how to resolve them.

lambda-sensor-problem-bmw-x4

What is a lambda purpose on BMW X4?

So we start our content with the benefit of a lambda sensor on BMW X4 , we will first see what is the job of this probe and then how it works.

Role of a lambda sensor on BMW X4

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 BMW X4 , its goal is to control the amount of oxygen in the exhaust gases, this will allow the engine to modify the air/fuel mixture to lower the pollution released by the motor vehicle and reduce the car’s fuel consumption.

Lambda sensor procedure on BMW X4

Before explaining you the different complications of lambda probe on BMW X4 , we will look a little more in outline at its working to allow you to understand exactly 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 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 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 exact 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 BMW X4

.
At last, we are now going to attack the section you are absolutely most interested in this content, how to proceed if you have a lambda sensor problem on BMW X4 . In a first step we will discover how to identify a lambda sensor HS and in a second step how to change it.

How to know if a lambda sensor on BMW X4 is HS

.
It is important to know that a lambda sensor has in general a lifetime of 150 000 km , this info can differ according to the year of your BMW X4, your driving, and the good performance of your engine. A poorly looked after engine that emits unburned gases may completely alter your lambda sensor. One of the clues that can alert you of a defective lambda sensor on BMW X4 may be the engine light turns on, if you want to turn off the engine light of your BMW X4, do not think twice to visit our dedicated content to see the process to follow. The only effective way to be certain that you have a lambda sensor problem on your BMW X4 and to complete your car to the diagnostic case, for that do not think twice to seek advice from our tutorial which explains you BMW X4how to read the fault code of a BMW X4. Please be aware that if you have complications with one of your lambda sensors, the just solution to correct them will be to change the defective sensor.

How to change a lambda sensor on BMW X4?

And finally, we are going to focus on the correction of lambda sensor problems on BMW X4 , by detailing how to replace a lambda sensor.

The replacement of a lambda sensor is quite simple to perform and you will be able 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 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 required to put your BMW X4 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 BMW X4.

If you wish more tutorials on the BMW X4, go to our BMW X4 category.