wiings

So I am switching over from NY to CT. They test emissions and the check engine light is on in my '07 Cobalt. It failed the test for this:

PO121: Throttle/Pedal Position Sensor/Switch "A" Circuit Range/Performance

I just thought I'd throw it out there and see if anyone knows about this. The guy at the station said he could not tell me how much it would be unless I left it for them to check out.

Thanks