Hello,

Car is my '86 300E. Intermittently, my O2 Sensor light does not light on the test mode. Sometimes it does work. Does this mean it is unplugged or lose somewhere?

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David
1986 300E Anthracite + ECodes + MB Mileage Award

Hi,

Nobody haws any ideas why my O2 Sensor dash lamp is lit only intermittently? This is before I start, with key in pos. 2.

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David
1986 300E Anthracite + ECodes + MB Mileage Award

I would think that it's either caused by the bulb or the connection going to the bulb, could be getting lose.

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1992 Mercedes-Benz 400E
2002 Mercedes-Benz ML500

Hello Everybody,

This is fixed. It was the OVP Relay.

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David
1986 300E Anthracite + ECodes + MB Mileage Award