Q45 V8-4494cc 4.5L DOHC (VH45) (1992)
Oxygen Sensor: Description and Operation
The exhaust gas sensor, which is placed into the exhaust outlet, monitors the amount of oxygen in the exhaust gas. This sensor is made of ceramic
titania, the electric resistance of which drastically changes at the ideal air fuel ratio. The ECU supplies the sensor with approximately 1 volt and then
measures the output voltage depending on its resistance. In order to activate the sensor element, it is equipped with a heater.