Action Taken When the DTC Sets

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.

DTC P0AC0, P0AC1, P0AC2, and P1A07 are type A DTCs.
The driver information center (DIC) displays the SERVICE HYBRID SYSTEM message.
State of charge goes to invalid.
The drive motor generator battery control module sends a message to the hybrid powertrain control module requesting that the hybrid battery power limit be set to 3 kilowatts, resulting in minimal hybrid function.