2006 FX35 O2 sensor replacement questions

Sheryl Hudson

Member
Car
2006 Infiniti FX35 RWD
Name
Sheryl
Got a code P0131, suggesting my 02 sensor 1, bank 1 is bad. I found instructions on how to check the sensor with a voltmeter, but I cannot locate the darn thing. I found where it said it is supposedly located, passenger side back by the firewall, but I can't find it! Should I be looking from underneath the car???

Any help, maybe with pictures, would be much appreciated.
 
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