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Home >> Geo >> 1995 >> Metro Base, 2D Hatchback >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation - 1.3L 4-CYL >> Computerized Engine Controls >> Input Devices >> Sub-Oxygen (Sub-O2S) Sensor
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Sub-Oxygen (Sub-O2S) Sensor

Sub-O2S sensor checks oxygen level in exhaust after WU-TWC and sends reference signal to ECM. This provides a more precise fuel injector control.

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