Will the failure of the oxygen sensor cause the car to fail to refuel?

When the oxygen sensor is damaged, it will affect the power output of the engine. Because the ecu will not accurately adjust the air-fuel ratio after the oxygen sensor is damaged, it will affect the power and fuel rationality of the engine. If the oxygen sensor is damaged, it will affect the engine failure.

Cars are basically equipped with oxygen sensors, which are installed at the exhaust pipe head.

exhaust pipe

There is a component called three-way catalytic converter in the head, and the oxygen sensor is installed before and after the three-way catalytic converter.

The oxygen sensor in front of the three-way catalyst is called the front oxygen sensor, and the oxygen sensor behind the three-way catalyst is called the rear oxygen sensor.

The key function of the front oxygen sensor is to detect the oxygen content in the engine exhaust, and then the oxygen sensor will feed back the data to ecu, which can adjust the air-fuel ratio according to this data.

The oxygen sensor behind the three-way catalyst is called the rear oxygen sensor.

The function of the post-oxygen sensor is to check whether the three-way catalyst can work normally.