Latest cars are more and more 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 released by our cars. This is exactly the subject of our content of the day, we are going to look at the problems of the lambda sensor on Toyota Sienna , this sensor also known as oxygen sensor plays an important function. To find out, first, we are going to identify what a lambda probe is utilized for, then, what are the lambda sensor problems on Toyota Sienna and how to resolve them.
What is a lambda role on Toyota Sienna?
So we begin our article with the benefit of a lambda sensor on Toyota Sienna , we will first see what is the role of this probe and then how it functions.
Role of a lambda sensor on Toyota Sienna
First designed by Volvo in the 1970s, it began to show up on our cars in the 1990s with the first EURO 1 emission specifications. As well called oxygen sensor on Toyota Sienna , its task is to control the amount of oxygen in the exhaust gases, this will allow the engine to adapt the air/fuel mixture to decrease the pollution released by the motor vehicle and lower the car’s fuel consumption.
Lambda sensor process on Toyota Sienna
Before describing you the different problems of lambda probe on Toyota Sienna , we will look a little more in detail at its operation to allow you to figure out exactly how it functions and thus to consider more serenely the correction of a problem associated with 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 presume 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 needed before the catalyst, but with the arrival of more drastic specifications 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 injected into the engine to improve the combustion .
Lambda sensor problem on Toyota Sienna
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At last, we are now going to attack the part you are certainly most keen on this article, how to proceed if you have a lambda sensor problem on Toyota Sienna . In a first step we will see how to find a lambda sensor HS and in a second step how to change it.
How to know if a lambda sensor on Toyota Sienna is HS
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It is important to know that a lambda sensor has in general a lifetime of 150 000 km , this data can fluctuate according to the year of your Toyota Sienna, your driving, and the good working of your engine. A poorly maintained engine that releases unburned gases may permanently alter your lambda sensor. One of the clues that can warn you of a defective lambda sensor on Toyota Sienna might be the engine light turns on, if you want to turn off the engine light of your Toyota Sienna, do not think twice to seek advice from our dedicated article to see the process to follow. The only effective technique to be sure that you have a lambda sensor problem on your Toyota Sienna and to pass your car to the diagnostic case, for that do not think twice to seek advice from our guide which explains you Toyota Siennahow to read the fault code of a Toyota Sienna. Please note that if you have problems with one of your lambda sensors, the only remedy to correct them will be to change the defective sensor.
How to change a lambda sensor on Toyota Sienna?
And at last, we are going to focus on the correction of lambda sensor problems on Toyota Sienna , by explaining how to replace a lambda sensor.
The replacement of a lambda sensor is quite basic to perform and you will have the ability to do it yourself with a minimal of tools and mechanical know-how. 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 fairly quickly. To replace it, it will be necessary to put your Toyota Sienna 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 Toyota Sienna.
To find more tips on the Toyota Sienna, take a look at the Toyota Sienna category.
