p0141 02 heater cicuit bank 1 sensor 2 acura rsx 2002

Hey y'all so I'm a new RSX owner I bought myself a 2002 base automatic with 137k miles and naturally it had some issues when I bought it. So first things first it was terribly shaky upon ignition and whenever I stopped. I replaced the passenger side motor mount and the transmission mount, I also did an oil change and for basically one car ride it was working perfectly (Before that it vibrated, like I said, and capped off at 4000rpm). So I get home park it satisfied with the work done with it so far.

I turned it back on a few hours later and it started vibrating again, and again is capping me off at 4000rpms. Now the vibrating wasn't as bad as before I put on the motor mount and transmission mount but it's still very annoying, the only difference is that it stops when I'm driving and only happens when I turn the car on.
I also hooked up a reader to see if there were any codes I had missed and turns out it started showing the code p0141 O2 heater circuit bank 1 sensor 2. So i bought a sensor to replace but I have no idea where to find how to hook it up and am unable to find any tutorials or manuals online. So here are my questions for anyone kind enough to answer them.

1. could this problem be a result of the sensor?
2. Where could I find the sensor to replace it?
3. I found one tutorial of an acura sensor being replaed for a late 90s acura where it was underneath the car so that had me thinking the reason it's not working properly is because the previous owner had it so low.
4. If not this then maybe I missed a mount as I only replaced two? (Passenger side motor mount and transmission mount)

Thanks in advance I appreciate the help!:):):) :)

p0141 02 heater cicuit bank 1 sensor 2 acura rsx 2002