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Conditions for Setting the DTC

WARNING: This page is about a different car, the 2018 Buick Regal TourX and 2018 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.

B3123 02 

The keyless entry control module detects a short to ground on the rear center console keyless entry antenna signal circuit.

B3123 05 

The keyless entry control module detects a short to B+ or an open on the rear center console keyless entry antenna signal circuit.

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