Is there a difference between o2 Sensor and Cat converter - Nissan Murano Forum
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post #1 of 3 Old 05-18-2017, 10:09 AM Thread Starter
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Is there a difference between o2 Sensor and Cat converter

I know this question has been asked before but I can't seem to find it. I have an 05 Murano and was wondering if the codes are the same for an o2 sensor and a cat converter. Asking because I'm sure I need one or the other. I just don't want to have the incorrect one replaced. Thanks for any help.
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post #2 of 3 Old 05-18-2017, 07:46 PM
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Oxygen Sensor codes can be caused by bad converters. It's a tough thing to troubleshoot. The may I diagnosed by bad converter was with my non-contact infrared thermometer. My bad converter was running hotter than the converter I didn't think was bad, there was a 100 degree Farenheit difference.

The only code that would be an O2 sensor for sure would be an "Oxygen Sensor Heater Circuit" code. I just did a ton of work on my MO including these parts. I recommend replacing both cats and all four oxygen sensors. I know it's expensive, but if its a high mileage car then you will benefit from replacing all of these.

Hope this was helpful.
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post #3 of 3 Old 05-19-2017, 12:35 PM
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The good news is that generic O2 sensors are cheap. You can change one out without breaking the bank, and you don't need a Nissan sensor.

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