Can the car run if the oxygen sensor is broken?

1 Answers
VanChristian
07/30/25 10:01am
The car can run if the oxygen sensor is broken. The function of the car oxygen sensor is to detect the oxygen content in the exhaust gas emitted from the cylinders. The onboard computer controls the intake of air and fuel based on the oxygen content in the exhaust, ensuring that the fuel is fully burned without waste or pollutant generation, while also preventing excessive air intake that would waste valuable cylinder volume. The oxygen sensor ensures that the three-way catalytic converter has high conversion efficiency for the three pollutants in the exhaust: hydrocarbons (HC), carbon monoxide (CO), and nitrogen oxides (NOX), significantly converting and purifying emission pollutants. The oxygen sensor measures whether there is excess oxygen in the exhaust after engine combustion, i.e., the oxygen content, and converts this oxygen content into a voltage signal transmitted to the engine computer, enabling the engine to achieve closed-loop control targeted at the excess air factor.
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