B1277 2016 Chevrolet Silverado Code - Microphone 1 Input Signal Circuit
Quick Answer
For Cellular, Entertainment, and Navigation Systems: The Human Machine Interface Control Module uses the cellular telephone microphone for voice recognition and cellular features. Common causes include Faulty Cellular Phone Microphone (For Cellular, Entertainment, and Navigation Systems), Faulty Radio Volume Compensator Interior Noise Microphone (For Active Noise Cancellation System), Faulty Audio Amplifier (For Active Noise Cancellation System). Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
- What it means
- B1277 2016 Chevrolet Silverado indicates Microphone 1 Input Signal Circuit.
- Common causes
- Common causes include Faulty Cellular Phone Microphone (For Cellular, Entertainment, and Navigation Systems), Faulty Radio Volume Compensator Interior Noise Microphone (For Active Noise Cancellation System), Faulty Audio Amplifier (For Active Noise Cancellation System).
- Severity
- Low - monitor the vehicle and repair when practical.
- Can I drive?
- The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
Code B1277 2016 Chevrolet Silverado Description
The Human Machine Interface Control Module uses the cellular telephone microphone for voice recognition and cellular features. The Human Machine Interface Control Module provides a bias voltage to each microphone (+) and (-) signal circuit for the operation of the microphone.
The radio provides the cellular phone microphone with a supplied voltage on the cellular phone microphone high signal circuit. When the microphone is in use, voice data from the user is sent back to the radio on the cellular microphone low signal circuit.
For Active Noise Cancellation System:
The active noise cancellation system uses three microphones in the vehicle headliner: one above each front seating position, and one above the rear seat. The Audio Amplifier provides a bias voltage to each microphone (+) and (-) signal circuit for the operation of the microphone. The microphones monitor the vehicle cabin for undesirable engine sounds. The Audio Amplifier uses the microphone inputs and an engine RPM signal to determine the frequency of the undesirable sound.
What are the Possible Causes of the DTC B1277 2016 Chevrolet Silverado?
- Faulty Cellular Phone Microphone (For Cellular, Entertainment, and Navigation Systems)
- Faulty Radio Volume Compensator Interior Noise Microphone (For Active Noise Cancellation System)
- Faulty Audio Amplifier (For Active Noise Cancellation System)
- Faulty Human Machine Interface Control Module or Radio (For Cellular, Entertainment, and Navigation Systems)
How to Fix the DTC B1277 2016 Chevrolet Silverado?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B1277 2016 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the B1277 2016 Chevrolet Silverado code?
Need more information on how to fix the B1277 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B1277 2016 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about B1277 2016 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code B1277 on a 2016 Chevrolet Silverado related to Microphone 1 Input Signal Circuit?
The common symptoms include issues with the microphone system, such as no sound input or poor audio quality during phone calls or voice commands.
2. What are the potential causes of OBDII code B1277 on a 2016 Chevrolet Silverado?
Potential causes include a faulty microphone, damaged wiring or connectors in the microphone circuit, or issues with the audio control module.
3. How can I diagnose the Microphone 1 Input Signal Circuit issue causing OBDII code B1277 on my 2016 Chevrolet Silverado?
You can start by checking the microphone connections, inspecting the wiring for any visible damage, and testing the microphone itself for functionality. If necessary, use a multimeter to check for continuity in the circuit.
4. Can I repair the Microphone 1 Input Signal Circuit problem causing OBDII code B1277 myself?
Depending on your skill level and access to tools, you may be able to repair the issue yourself by replacing the microphone, fixing any damaged wiring, or addressing the audio control module if needed.
5. Are there any simple tips to troubleshoot the Microphone 1 Input Signal Circuit issue on a 2016 Chevrolet Silverado?
You can try resetting the audio system, checking for any software updates related to the microphone system, and ensuring that there are no obstructions blocking the microphone.
6. Is it safe to continue driving my 2016 Chevrolet Silverado with OBDII code B1277 related to Microphone 1 Input Signal Circuit?
While the issue may not affect the overall drivability of the vehicle, it is recommended to address the problem to ensure proper functionality of the microphone system for communication and voice commands.
7. How much does it typically cost to repair the Microphone 1 Input Signal Circuit issue causing OBDII code B1277 on a 2016 Chevrolet Silverado?
The cost of repair can vary depending on the specific cause of the issue, but it may involve replacing the microphone, repairing wiring, or addressing issues with the audio control module. It's advisable to consult a professional for an accurate estimate.
8. Can extreme temperatures or humidity affect the Microphone 1 Input Signal Circuit on a 2016 Chevrolet Silverado?
Extreme temperatures and humidity can potentially impact the performance of the microphone system, leading to issues like poor audio quality or intermittent signal loss.
9. Will disconnecting the battery reset the OBDII code B1277 related to Microphone 1 Input Signal Circuit on a 2016 Chevrolet Silverado?
Disconnecting the battery may temporarily clear the code, but if the underlying issue with the Microphone 1 Input Signal Circuit is not addressed, the code is likely to reappear after some time.
10. Is the Microphone 1 Input Signal Circuit issue covered under warranty for a 2016 Chevrolet Silverado?
Depending on the warranty status of your vehicle, the Microphone 1 Input Signal Circuit issue may be covered under certain warranties, such as the manufacturer's warranty or an extended warranty plan. It's advisable to check with your dealership or warranty provider for specific coverage details.
Discuss the causes and fixes for B1277 2016 Chevrolet Silverado OBDII Code
Code B1277 2016 Chevrolet Silverado comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
