A malfunction of the lambda probe can be the cause of increased fuel consumption and rough idle or irregular engine operation. In today's article, we will talk about how a malfunction of the lambda probe manifests itself and what problems it causes.

Before we start, though, let's look at the lambda probe function and how it affects the engine.

Rough idle troubles many drivers of both old and new cars. However, some drivers ignore this problem and do not even realize how big of a mistake they are making.

Neglecting this problem can cause a whole series of other, much more expensive problems. But what kind of malfunction can cause the engine to run erratically? What to check and what to watch out for? Let's take a look at it.