Chosen Solution

where is the location of po 122 sensor.

Im going to asume you have a 305 or 350 motor This pic shows the general location of the TPsensor https://i.ytimg.com/vi/gzYShtrKfP8/maxre…. Most Throttle position sensors are located on the throttle body after the air intakes flapper . They can often be fixed by cleaning them with throttle body cleaner Hope this helps