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.
B1346 11
Circuit 2514 is short to ground.
B1346 13
Circuit 2514 has an open/high resistance.
B1346 63
A valid signal on the keypad signal circuit 2514 for longer than 15 s. If one of the OnStar® buttons is held or stuck for 15 s or greater, the K73 Telematic Control Module will set this DTC.