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Home >> BMW >> 1990 >> 325is Automatic >> Repair and Diagnosis (Single Page) >> Electrical >> Gauges >> Instrument Panel - Standard >> Testing >> O2 Sensor Indicator Test

O2 Sensor Indicator Test

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At 30,000 mile intervals, fuse (.1 amp) opens. Switch closes and O2 sensor service indicator illuminates. When replacing fuse, located inside instrument cluster behind speedometer, ensure ignition switch is in OFF position.For resetting of the O2 Service indicator see SERVICE INTERVAL INDICATOR .