P0A9C, P0AC6, P0ACB, and P0AE9
WARNING: This page is about a different car, the 2009 GMC Sierra and 2009 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
The hybrid battery temperature sensor is in normal operating range, but is 15°C (27°F) different from the other 3 sensors.