Conditions for Setting the DTC
WARNING: This page is about a different car, the 2012 GMC Yukon, 2012 Chevrolet Tahoe, and 2012 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
The drive motor generator battery control module reports that the contactors are open when the hybrid powertrain control module contactor system request circuit and the serial data message both indicate a closed request.