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Home >> Mercedes Benz >> 1993 >> 300D >> Repair and Diagnosis >> External Pages >> Different car >> Section 2 (Engine Controls - Theory & Operation) >> Computerized Engine Controls (HFM-SFI System) >> Input Devices >> Oxygen Sensor Signal

Oxygen Sensor Signal

WARNING: This page is about a different car, the 1993 Mercedes-Benz 300E. However, it is still accessible from the selected car via links, so may be relevant.

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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