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Home >> Mercedes Benz >> 1993 >> 300E Base, 2.8 >> Repair and Diagnosis >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls (HFM-SFI System) >> Input Devices >> Oxygen Sensor Signal
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Oxygen Sensor Signal

The oxygen sensor measures residual oxygen in exhaust gas. The oxygen sensor sends a voltage signal to engine control module. The engine control module uses oxygen sensor voltage to control fuel injection.

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