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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1974 (Engine Controls - Description And Operation - (Hybrid)) >> Catalyst and Exhaust System >> Underbody Catalyst >> Heated Oxygen Sensors (HO2S)

Heated Oxygen Sensors (HO2S)

WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

The HO2S provide the PCM with voltage and frequency information related to the oxygen content of the exhaust gas. For additional information on the HO2S, refer to ENGINE CONTROL COMPONENTS .

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