Modern vehicles are more and more equipped 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 vehicles. This is precisely the subject matter of our article of the day, we are going to look at the complications of the lambda sensor on Subaru Forester , this sensor also named oxygen sensor plays an essential function. To find out, first, we are going to find out what a lambda probe is used for, then, what are the lambda sensor complications on Subaru Forester and how to resolve them.
What is a lambda purpose on Subaru Forester?
So we start our content with the benefit of a lambda sensor on Subaru Forester , we will first see what is the purpose of this probe and then how it works.
Role of a lambda sensor on Subaru Forester
First created 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 Subaru Forester , its objective is to control the amount of oxygen in the exhaust gases, this will enable 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 Subaru Forester
Before explaining you the different complications of lambda probe on Subaru Forester , we will look a little more in detail at its working to allow you to understand exactly 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 task of controlling 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 only 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 adapt the quantity of air and gasoline inserted into the engine to improve the combustion .
Lambda sensor issue on Subaru Forester
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At last, we are now going to attack the section you are undoubtedly most enthusiastic about this content, how to handle it if you have a lambda sensor issue on Subaru Forester . In a first step we will discover how to identify a lambda sensor HS and in a second step how to replace it.
How to know if a lambda sensor on Subaru Forester is HS
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It is essential to know that a lambda sensor has generally speaking a lifetime of 150 000 km , this data can fluctuate according to the year of your Subaru Forester, your driving, and the good working of your engine. A poorly taken care of engine that produces unburned gases may completely damaged your lambda sensor. One of the clues that can notify you of a defective lambda sensor on Subaru Forester may be the engine light comes on, if you want to turn off the engine light of your Subaru Forester, do not think twice to seek advice from our dedicated content to see the process to stick to. The only effective technique to make sure that you have a lambda sensor issue on your Subaru Forester and to pass your car to the diagnostic case, for that do not think twice to consult our guide which explains you Subaru Foresterhow to read the fault code of a Subaru Forester. Take note that if you have complications with one of your lambda sensors, the only remedy to resolve them will be to replace the defective sensor.
How to replace a lambda sensor on Subaru Forester?
And finally, we are going to concentrate on the correction of lambda sensor problems on Subaru Forester , by describing how to replace a lambda sensor.
The replacement of a lambda sensor is quite simple to accomplish and you will be able to do it yourself with a minimum 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 Subaru Forester 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 Subaru Forester.
If you want more tutorials on the Subaru Forester, go to our Subaru Forester category.
