HO2S and Catalyst Monitor Sensors working procedure?

HO2S means heated oxygen sensor.


The HO2S:
has the ability to create a voltage signal dependent on exhaust oxygen content.
provides feedback information to the PCM used to calculate fuel delivery.

The Catalyst Monitor Sensors:
monitor oxygen content after it flows through the catalytic converter.
provides a voltage to the PCM used to calculate catalytic converter integrity.

This details will help.

Thanks.

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