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O2 sensor voltage r...
 
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O2 sensor voltage reading

  

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Hello everyone. 

I have a 2005 Nissan Sentra 1.8 Automatic with 174000 miles. I have a PO420 code and decided to do some diagnosing to see if it actually is the Catalytic Converter. It is the top reported fix to the problem but I’m hoping I won’t have to. 

https://postimg.cc/sv2rvJ6K

 

There is the link to the live data for the O2 sensors. I can’t find anyone else online who’s had the same readings so maybe it can be deciphered? 

I would like to mention that when the car warms up, the idle is fine when in drive or reverse. However, after sometime, the rpm drops when in drive or reverse at idle. I put the car in neutral or park and it goes back to normal rpm. 

Thanks! 


1 Answer
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please use the direct link when sharing images

sensor 2 should not be fluctuating. The cat is bad.


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