Conditions for Setting the DTC
WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
P150D
Battery voltage on circuit 2 is less than 8.0 V for more than 2.5 s.
P150E
Battery voltage on circuit 1 is less than 8.0 V for more than 2.5 s.