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Home >> Subaru >> 1996 >> Impreza Outback, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> Oxygen Sensor (O2S)
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Oxygen Sensor (O2S)

Sensor generates voltage according to exhaust gas oxygen content. Signal voltage increases when oxygen content is low (rich), and decreases when oxygen content is high (lean). ECM controls air/fuel ratio based on voltage generated.

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