Edmunds Answers

Voted Best Answer

  • avatar corporalm 06/24/11 1:09 am PST

    You can do it yourself, but you will need to purchase and OBDII scanner. Your diagnostic link connector (DLC) is located under your dash and to the left of the steering column. Connect your scanner to the DLC, turn your car to ACC and follow the instructions from the scanner. If the light comes back on soon afterward, then you have an issue other than your catalytic converter, possibly your O2 sensor is the Cat was bad. The scanners usually are not too expensive and pay for themselves pretty quickly. Why pay the dealership 85 bucks to tell you that your gas cap is loose when you can run that code yourself?

Answers

  • corporalm 06/24/11 1:09 am PST

    You can do it yourself, but you will need to purchase and OBDII scanner. Your diagnostic link connector (DLC) is located under your dash and to the left of the steering column. Connect your scanner to the DLC, turn your car to ACC and follow the instructions from the scanner. If the light comes back on soon afterward, then you have an issue other than your catalytic converter, possibly your O2 sensor is the Cat was bad. The scanners usually are not too expensive and pay for themselves pretty quickly. Why pay the dealership 85 bucks to tell you that your gas cap is loose when you can run that code yourself?

  • knowledgepower 06/24/11 3:49 am PST

    I had this same problem when replacing a catalytic converter. The O2 sensor also needed replacing, I didn't know which one so I replaced both since it would be needed anyway. I had the vehicle tested a an Auto Zone auto parts store and it did show the O2 sensor.

  • corporalm 06/24/11 4:06 am PST

    It will most likely be the sensor closest to the catalytic converter, since it got very hot from excessive backpressure.

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