Conditions for Running the DTC

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

DTCs P0442, P0496, P0498, and P0499 are not set.
The engine is running.
The battery voltage is 10 volts.
The control module has commanded the purge solenoid ON and OFF at least once during the ignition cycle.
DTC P0443 runs continuously once the above conditions are met.