Conditions for Setting the DTC
WARNING: This page is about a different car, the 2010 Pontiac G5 and 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
The power mode message and the state of the PSCM's ignition circuit do not agree, or the PSCM's ignition circuit is shorted to voltage, ground or open