Conditions for Setting the DTC
WARNING: This page is about a different car, the 2015 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.
B2476 04
The telematics communication interface control module detects a short to voltage or an open/high resistance on the 10 V reference circuit.
B2482 and B2476 59
The telematics communication interface control module detects a valid signal on the keypad signal circuit for longer than 15 s. If one of the OnStar® buttons is held or stuck for 15 s or greater, the telematics communication interface control module will set this DTC.