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2006 Hyundai Santa Fe Question: How serious is the oxygen sensor to the maintainance of the vehicle



asantafe4me, 2.7L V6, Charlottesville, VA, May 21, 2014, 11:55

Concerned that check engine light comes on every so often, was told it could be the oxygen sensor, or not consistently using premium gas, or the gas cap not closed tightly.

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