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.

Before the PCM can report DTC P0455 failed, DTC P0107, P0108, P0117, P0118, P0451, P0452, P0453, P0496, P0498, P0499, P1128, P1129, P2199, P2227, P2228, and P2229 must run and pass.
The battery voltage is more than 10 volts.
The fuel system is operating in closed loop.
The fuel level is between 15-85 percent.
The difference between the initial intake air temperature (IAT) and the initial engine coolant temperature (ETC) is between 6-10°C (11-18°F).
The engine coolant temperature (ECT) is between 69-100°C (156-212°F).
The vehicle speed sensor (VSS) is between 12 km/h (7 mph) and 132 km/h (82 mph).
DTC P0455 runs once per drive cycle when the above conditions are met.