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Home >> GMC >> 2018 >> Acadia SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 331 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> DTC B1277: Cellular Phone Microphone Circuit (IOB) >> DTC Descriptors
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DTC Descriptors

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
DTC B1277 02

Cellular Phone Microphone Circuit Short to Ground

DTC B1277 04

Cellular Phone Microphone Circuit Open/High Resistance

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