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.

The engine is ON.
The ignition voltage is between 8.7-16 volts.
The engine speed is more than 80 RPM.
The HVAC control module driver transitions from ON to OFF or from OFF to ON.