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Guest Message by DevFuse

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Symptoms of a Bad O2 sensor

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2 replies to this topic

#1 jonfit04


    USMB Regular

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  • Somerset

Posted 10 November 2006 - 12:54 PM

Can, anyone tell me what would be some symptoms of a bad Front O2 sensor?


#2 nipper


    Semi Elite Master of the

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  • Long Island NY

Posted 10 November 2006 - 01:02 PM

CEL on
Cat Effecience code thrown
poor performance
poor gas mileage
Runnung rich

If the car has over 100,000 miles and you suspect a bad o2 sensor, the sensor is past its design life.

Why do you ask?

#3 The Dude

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Posted 11 November 2006 - 09:38 AM

I would just add that frequently, a Subaru can have a bad O2 sensor and NOT throw a code. If your car has close to 100,000 miles and you suspect a problem, you might change it. You'll be replacing it soon enough, anyway.

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