Auto Oxygen Sensor Koleos H8200495791 for Renault Production introduction: An Oxygen sensor is generally mounted in the exhaust stream of vehicles to measure the oxygen content of the exhaust gases. The sensor will compare the oxygen content to the oxygen proportion in the air and passes that information back to your vehicle’s engine computer (yes, your car has a computer), called Engine Control Module(ECU). A properly functioning Oxygen sensor will help your car to not only pass an emissions test but will also help your car’s fuel efficiency. Oxygen sensor is the standard configuration of automobile. It uses ceramic sensitive element to measure the oxygen potential in the exhaust pipe of automobile, and calculates the corresponding oxygen concentration according to the principle of chemical balance, so as to monitor and control the combustion air-fuel ratio, so as to ensure the product quality and exhaust emis…