RPM fluctuations are not one of those things you can just wave your hand at and start dealing with only when the worst happens. There can be several different causes if your engine's speed fluctuates. Without a thorough inspection of the car and its condition, it is tough to determine the problem.

We have already covered the topic of RPM fluctuations in the past. However, this article will look at one of the specific causes of engine power fluctuations, the name of which you will surely know - a faulty lambda sensor.

A lambda probe is a sensor used in all petrol engines with electronic petrol injection, although modern diesel engines are also equipped with this device.

But what is the purpose of the lambda probe, its types, and what about its lifespan? We will shed some light on this in today's article.