Action Taken When the DTC Sets

WARNING: This page is about a different car, the 2008 GMC Yukon and 2008 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.

DTC P0A8D is a Type C DTC.
The engine control module (ECM) will command the charge indicator and or warning message to be illuminated on the instrument panel cluster (IPC) and the driver information center (DIC), if equipped.
The APM will shutdown 14-volt conversions.