tchertel

I have been trying to diagnose my random misfire issues and yes my code scanner is showing me misfires on all cylinders. However, my bank 1 cylinders have about 3x as many misfires on them as my bank 2 cylinders. I was looking over the freeze frame data today I see SHRTFTB1S2 (%) showing "N/A" while SHRTFTB2S2 (%) is showing 99.2. I know Sensor 2 are the sensors behind the cats and my code scanner as well as UpRev will show voltages coming from both post-cat sensors therefore I am wondering if this N/A is a sign of a problem and is related to my heavy misfires on B1, is it just my code reader maybe not properly interfacing or is this normal on our Nissans for this "N/A" to be there? Please see picture.

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2014 370z Touring Sport, Stillen supercharger, cat-back and oil cooler