Cjness02

The other day I get in my car and start driving. While driving the rpms dropped and felt like I was driving in neutral. When I got home I turned the car off and back on and now it won’t come out of park. I can manually change the gear but says it’s still in park while driving. Feels like the car is stuck in some sort of limp mode. I scanned and got P0705 trans range sensor. I know there has to be a quick fix for this but can someone please help me with that. Any advice is greatly appreciated thank you!