Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2019CRUZE LS, 4D HATCHBACKREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTENTERTAINMENT SYSTEMSCELLULAR, ENTERTAINMENT, AND NAVIGATIONDIAGNOSTIC INFORMATION AND PROCEDURESDTC B1277CONDITIONS FOR SETTING THE DTC
2019 Chevrolet Cruze LS, 4D Hatchback
Conditions for Setting the DTC
2019 Chevrolet Cruze LS, 4D HatchbackSECTION Conditions for Setting the DTC
B1277 02
The radio detects a short to ground in the cellular phone microphone high signal circuit for 10 s or greater.
B1277 04
The following conditions will set this DTC:
- The radio detects an open/high resistance in the cellular phone microphone high signal circuit for 10 s or greater.
- The radio detects an open/high resistance in the microphone low signal circuit for 10 s or greater.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.