Conditions for Setting the DTC
WARNING: This page is about a different car, the 2011 GMC Yukon, 2011 Chevrolet Tahoe, and 2011 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
P1A0C
The drive motor generator battery control module detects the ignition voltage is less than 9 V for 3 seconds.
P1A0D
The drive motor generator battery control module detects the ignition voltage is greater than 16 V for 3 seconds.