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 system voltage is more than 5.23 volts.
The ignition is in Unlock/Accessory or Run position.
DTCs P0601, P0602, P0604, P0606, P0607 or P1621 are not set.