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2006 Mitsubishi Eclipse Question: code 0421... o2 sensor, or cat?



olay, 3.8L V6, Mandan, ND, July 05, 2010, 21:55

We have changed 3 of the 4 o2 sensors on this car, it still throws the code whenever it feels like it. Got it scanned and they said the bank 2 sensor 2 wasn't following the rest of them. Is bank 1 the side by the firewall? and could my whole problem be sensor 1 on bank 1?

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  • Answer #1

    July 05, 2010, 23:52

    stop guessing and throwing parts at it. you need a cat, not any of the sensors.


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