Question about 1999 Mazda Millenia

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I have mazda626, 2002, 6cyl. i got a code P0431 and get erased by mechanic. for a week it was running okay. I got the light on again. what is suggestion. My car has 52000 miles on it.

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  • shamimpgi Nov 14, 2009

    thank you for the nice advised. I will go for that. How much it cost for including labor.


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Change the oxygen sensor down by the catylitic converter, on bank 2

Posted on Nov 14, 2009

  • Richard Delahant Nov 14, 2009

    Hard to say, different places charge different rates.


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If you have more questions, please let me know.

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Technically, you can put the car in neutral and press the gas while the car is running, til it reaches 3500 rpm. You don't have to actually have the car on the road while you do this.

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change your sparkplug wires that will salve yor problem

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