The function of the Oxygen Sensor in Toyota Yaris cars is plus significant as it is required for controlling the proportion of air/fuel mixture for the proper functioning of a car and reducing emissions. Treading the exhaust and comparing the burnt fuel content to the atmospheric oxygen content the sensor produces a voltage signal that the engine control computer uses to tweak the mixture. This feedback loop works in what is known as closed loop mode to cater for an efficient catalytic converter. Toyota Yaris models commonly incorporate two oxygen sensors with the first one situated before the catalytic converter and the second - after it, the most important one being the upstream. While older sensing technology may use zirconium dioxide technology, newer vehicles may contain air/fuel ratio sensors for the wider ranges. The main consequences of low-quality oxygen sensors and bulbs depend on their diminished effectiveness are higher emissions of hydrocarbons and fuel consumption, as well as such damage as high fuel consumption, potential problems with engine performance, and more.
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