Heated Oxygen Sensor (HO2S) and Catalyst Monitor Sensor (CMS)

Electronic Engine Controls

Heated Oxygen Sensor (HO2S) and Catalyst Monitor Sensor (CMS)

The HO2S and CMS:

- have the ability to create a voltage signal dependent on exhaust oxygen content.
- provide feedback information to the PCM used to calculate fuel delivery.

For removal and installation, refer to Heated Oxygen Sensor (HO2S) and Catalyst Monitor Sensor - Exploded View Heated Oxygen Sensor (HO2S) and Catalyst Monitor Sensor - Exploded View and Heated Oxygen Sensor (HO2S) Heated Oxygen Sensor (HO2S) or Catalyst Monitor Sensor Catalyst Monitor Sensor.