Conditions for Running the DTC

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

Before the engine control module (ECM) can report DTC P0496 failed, DTCs P0443, P0452, P0453, P0458, and P0459 must run and pass.
The fuel system is in closed loop.
The engine run time is greater than 10 minutes or the long term fuel trim is stable.
The engine has cycled ON and OFF between 6-16 times dependent on coolant temperature.
The ignition voltage is between 10-18 volts.
The fuel tank pressure (FTP) is between -26.3 and +10.5 mm Hg (-12.6 and +5.6 in H2O).
The ambient air temperature is between 2-32°C (36-90°F).
The start-up engine coolant temperature (ECT) is within 10°C (18°F) of ambient air temperature
The fuel tank level is between 12-88 percent.
The barometric pressure (BARO) is greater than 68 kPa.
The vehicle speed sensor (VSS) is between 19-100 km/h (12-62 mph).
The above conditions are met for greater than 11 seconds.
DTC P0496 will attempt to run up to 10 times or the test completes successfully once per ignition cycle.