The lambda sensor is fixed to the catalytic converter. In general vehicles are equipped with two lambda sensors: one in front of the cat con and one behind. Both serve a different purpose; the first is to diagnose the exhaust fumes and the second to regulate them.The lambda sensors send information to the calculator so that the latter can adapt the air/fuel mixture accordingly.
A Renault lambda sensor is replaced when it breaks down. Unfortunately lambda sensors cannot be maintained or cleaned so as to increase their lifespan.
To determine which lambda sensor is suitable for your car, please select the model and engine type of your Renault into the search engine.