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2002 Mazda Millenia Question: have an 02, check engine light is on, gas mileage is kind of bad.

 

Question

dtillek, 2.3L V6 Supercharged, Honolulu, HI, November 16, 2011, 14:41
 Rookie

can the check engine light effect thegas mileage

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  • Answer #1

    patrick mannion from Greg Solow's Engine Room, November 16, 2011, 22:07
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     Master

    If an oxygen sensor is reading incorrectly it can dramatically affect gas mileage. Oxygen sensor test the engine's computer is left unburned in the exhaust and trims fuel mixture accordingly.

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  • Answer #2

    chinasinoy November 17, 2011, 01:46
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     Journeyman

    hi dear friend, I think you must read out the code first. I hope this information can help you.

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  • Answer #3

    02supercharged November 23, 2013, 16:05
     Rookie

    I don't know about the bad gas mileage but make sure your gas cap is in good condition and never take it off unless you intend to fill the tank.

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