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What is a lambda probe and what is its purpose?

Model: (Various brands) Various
Part: Oxygen sensor

The lambda probe is an electronic sensor installed in the vehicle's exhaust system. Its task is to measure the amount of oxygen present in the exhaust gases after combustion. The information provided by the lambda probe is very important for the correct functioning of the engine and to reduce polluting emissions. Its main functions are: optimizing the air/fuel ratio; controlling polluting emissions; signaling variations in the fuel system, which help professionals - but also amateurs - in engine diagnostics.

Posted on 6 November 2025 by ScegliAuto

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How to Open the Bonnet of a Renault Megane if the Lever is Broken?

If the lever that unlocks the bonnet of the Renault Megane is broken or not functioning, there is an emergency procedure to unlock the mechanism: remove the right front grille located at the top of the bumper. Once the grille is removed, you can locate the actuator mechanism: by pulling the spring in this position, you can unlock the actuator, allowing you to lift the bonnet and access the components located inside the engine compartment. You can then close the bonnet simply by lowering it.

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