I was wondering if it is possible for one or both or the oxygen sensors on my 94 MX6 V6 to be bad without throwing any codes? I'm having a problem with the car and everything seems to point to the O2 sensor(s) being bad but I have no codes.
not always. I've seen sensors that were failing not throw codes.
I had the classic gas millage dropped of a cliff (from 24mpg to 18) with no codes. Replaced my o2 sensor ( I had recently replaced one of them so I guessed it was the other) and everything was back to normal.
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