2014 Pathfinder CVT issues

I have a 2014 Nissan Pathfinder SL 3.5L V6. When my wife bought this in September 2025, it seemed fine at the time, no transmission or engine issues. She drove it home for 2.5 hours, then around town for a few days. I was out of town at this time, and she drove to pick me up, 3 hours each way. It drove fine during all that.

Anyhow, shortly thereafter, it started to seem like it was kind of jerking at lower speeds, had a rough idle, almost where it might die. I replaced the front 3 spark plugs, as the back 3 require pulling intake manifold, was not ready for all that. Also changed 2 of the 4 O2 sensors I could locate. Mass air flow sensor error code. After installing 2 new MAF sensors, same performance and error.

Anyhow, shortly thereafter, it started to lunge, with the RPM spiking. I replaced the 3 front spark plugs and 2 of the O2 sensors. That did not resolve the issue. It felt like it was starved for gas.

Then my wife got stranded one night, it was in limp mode, and we had to have it towed to our house.

Poking around in the engine bay, I found the large accordion hose from MAF to the throttle body had a major hole in it. I got a new hose, and the hesitation and rough idle went away. That resolved some of the lunging but did not resolve the RPM spiking. A new issue arose of driving smoothly to around 40 mph but then the RPMs increasing but the mph not increasing.

Then came Code P0776 pressure control solenoid B. I replaced the transmission valve body with all the solenoids, as well as new NS-3 transmission fluid. My wife drove it to the end of our long driveway, and it threw a code there, which showed low transmission fluid level. We then checked the level with the silver drain plug, engine warm, seemed OK, added some until slightly more flow. Test drove again with me in vehicle this time. It acted like it was driving over ruble strips on the edge of the road, no power, engine seemed to match RPMs, we immediately turned around and brought it home. 3 error codes: P084C Transmission fluid pressure sensor/switch H circuit Low, P0847 transmission fluid pressure sensor/switch b circuit low, P0746 pressure control solenoid A performance/stuck off. I find the last one odd, since I just replaced the trans valve body, which contains the pressure control solenoid A.

ANY help would be very much appreciated! I realize there is the possibility that the CVT transmission is shot, but I do not have $5000, let alone $1000 for a new trans.