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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.

DTC B1B42 

The K9 Body Control Module and K56 Serial Data Gateway Module do not see the same S38 On/Off Vehicle Switch Inputs at the same time for more than 2 consecutive events.

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