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What is a lambda probe and what is its purpose?
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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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