Conditions for Setting the DTC
WARNING: This page is about a different car, the 2018 Cadillac XT5. However, it is still accessible from the selected car via links, so may be relevant.
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The telematics communication interface control module detects a short to voltage on the keypad supply voltage circuit
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The telematics communication interface control module detects a short to ground in the keypad supply voltage circuit.
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The telematics communication interface control module detects an open/high resistance on the keypad supply voltage circuit.
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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.