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Home >> Buick >> 2019 >> Envision Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 11 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> DTC B12A6 >> Circuit/System Description

Circuit/System Description

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

The radio communicates with the Info Display Module via serial data. This DTC indicates a fault in the Info Display Module. No external circuits are involved.