Action Taken When the DTC Sets
WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.
B1B15 2A, B1B15 11, B1B15 15
The S38 On/Off Vehicle Switch Signal Voltage circuit 5723 to the K9 Body control Module will be ignored until the fault is corrected and the Passive Start Switch Signal 2 Input circuit 3558 to the K56 Serial Data Gateway Module (Back-Up Power mode Master) will take over to power mode the vehicle.