Throttle position Sensor for 1996 S-10 Blazer

I own a 1996 S-10 Blazer with 146,000 miles on it. My vehicle is showing the code P0122 (tps low in put). I have checked the wiring and all appears fine. I am still showing the code so I need some further guidance. Vehcile starts fine but seems to bogg down as if being choked when I step into the throttle.