EVAP Canister Purge Valve Monitor Enabling Criteria

The diagnostic check for the EVAP canister purge valve will run when:

^ The diagnostic test has not been completed yet this trip.
^ The pre-catalyst oxygen sensor transition diagnosis has passed.
^ The engine is operating in closed loop.
^ The vehicle is stationary.
^ The throttle is closed.
^ The EVAP canister purge valve is active.
^ There are no load changes.
^ The idle speed is stable.

Hardware Required
No additional hardware is required to perform the purge system diagnostic.