Conditions for Setting the DTC
WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
DTC P16D4
B110 Battery Monitor Module detects a voltage of less than 3 V.
DTC P16D5
B110 Battery Monitor Module detects a voltage of greater than 26 V.
DTC P16D6
B110 Battery Monitor Module detects a current of less than -1400 A.