I scanned the check engine light and the code came back as p0501 . I changed the automatic transmission speed sensor under the hood and cleared the code. The code came back the next day while driving. What should I swap out next to narrow this down and fix this? My speedometer has never stopped working so I'm confused as to what I should do next. My car is a 2010 hyundai accent GS

 

There is a good possibility one of the wheel speed sensors is not working. A good scan tool will tell you which one or you can go and replace both.