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Oxygen Sensor S40-V40 2000

posted by  someone claiming to be butch1 on  Thu Dec 18 06:17 CST 2014 [RELATED]

I cleaned the plug contacts and disconnected battery to reset. But upon startup, CEL came back on. Drove to work 3 days with CEL on. No noticeable difference in performance or fuel consumption.
This morning, CEL did not come on after startup. About 5 miles into my commute, it came on. Is this a significant clue? For example, does the O2 sensor fail, or does it deteriorate.

I have read many posts concerning replacing O2 sensor and CEL coming back on, so I don't want to replace it if something else is causing the issue.






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New Oxygen Sensor [S40-V40][2000]
posted by  someone claiming to be butch1  on Mon Dec 15 20:53 CST 2014 >


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