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.

IMPORTANT: The following conditions must be met prior to ignition OFF.

Before the PCM can report DTC P0442 failed, DTCs P0455, and P2199 must run and pass.
DTCs P0107, P0108, P0117, P0118, P0452, P0453, P0496, P0498, P0499, P1128, P1129, P2227, P2228, and P2229 are not set.
A refueling event is not detected.
The fuel volatility is not excessive.
The ambient air temperature is 4°C (40°F) or above.
The engine coolant temperature is more than 69°C (156°F).
The fuel level is between 15 and 85 percent.
The engine run time is more than 25 minutes.
DTC P0442 runs once per drive cycle when the above conditions are met.