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.
B19DA 13
Backup Power Source - Open Circuit
B19DA 16
Backup Power Source - Voltage = Less than a predefined threshold - At least 1 time(s) during the ignition cycle
B19DA 17
Backup Power Source - Voltage = Greater than a predefined threshold
B19DA 4B
Backup Power Source - Temperature = Greater than a predefined threshold