Error Code P1441

Help with fixing the error code P1441 the Evap System Flow During Non-purge condition.

Autozone states 2 possible causes:
1. Failed canister purge solenoid.
2. Failed fuel tank pressure sensor.

Any thought on the problem? where are these located on a 2002 Saturn L200? What about pictures?

Thanks

Ken

the fuel tank sensor is located on top of the fuel tank meter on top of the fuel tank. the canister purge solenoid is located on the fuel tank filler vent hose. sorry no pictures I can send