AutoCodes – GMC – B2455 2017 GMC Sierra

B2455 2017 GMC Sierra Code - Cellular Phone Microphone Circuit

Quick Answer

The Telematics Communication Interface Control Module provides the Cellular Phone Microphone with a supplied voltage on the Cellular Phone Microphone signal circuit. Common causes include Faulty Cellular Phone Microphone, Cellular Phone Microphone harness is open or shorted, Cellular Phone Microphone circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
B2455 2017 GMC Sierra indicates Cellular Phone Microphone Circuit.
Common causes
Common causes include Faulty Cellular Phone Microphone, Cellular Phone Microphone harness is open or shorted, Cellular Phone Microphone circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code Popularity 184
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 26, 2023
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Code B2455 2017 GMC Sierra Description

The Telematics Communication Interface Control Module provides the Cellular Phone Microphone with a supplied voltage on the Cellular Phone Microphone signal circuit. When the microphone is in use, voice data from the user is sent back to the Telematics Communication Interface Control Module on the cellular microphone low reference circuit. The Diagnostic Trouble Code (DTC) will be set when the Telematics Communication Interface Control Module detects a Cellular Phone Microphone Circuit failure.
OBDII Code B2455 2017 GMC Sierra - Cellular Phone Microphone Circuit - AutoCodes.com
B2455 2017 GMC Sierra Code - Cellular Phone Microphone Circuit

What are the Possible Causes of the DTC B2455 2017 GMC Sierra?

  • Faulty Cellular Phone Microphone
  • Cellular Phone Microphone harness is open or shorted
  • Cellular Phone Microphone circuit poor electrical connection
  • Faulty Telematics Communication Interface Control Module

How to Fix the DTC B2455 2017 GMC Sierra?

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2455 2017 GMC Sierra 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 B2455 2017 GMC Sierra code?

Need more information on how to fix the B2455 2017 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2455 2017 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B2455 2017 GMC Sierra Code

1. What are the common symptoms of OBDII code B2455 in a 2017 GMC Sierra related to the Cellular Phone Microphone Circuit?

- The common symptoms include malfunctioning hands-free calling system, poor sound quality during phone calls, and unresponsive voice command features.

2. What are some possible causes of OBDII code B2455 in a 2017 GMC Sierra related to the Cellular Phone Microphone Circuit?

- Possible causes include a faulty cell phone microphone, wiring issues in the microphone circuit, damaged connectors, or a malfunctioning audio control module.

3. How can I diagnose the issue causing OBDII code B2455 in a 2017 GMC Sierra related to the Cellular Phone Microphone Circuit?

- You can start by checking the condition of the cell phone microphone, inspecting the wiring for any visible damage, testing the connectors for proper connectivity, and using a diagnostic tool to scan the audio control module for errors.

4. What are the repair options for fixing OBDII code B2455 in a 2017 GMC Sierra related to the Cellular Phone Microphone Circuit?

- Repair options include replacing the faulty cell phone microphone, repairing damaged wiring or connectors, and reprogramming or replacing the audio control module if necessary.

5. Can I fix OBDII code B2455 in a 2017 GMC Sierra related to the Cellular Phone Microphone Circuit myself?

- Depending on your experience and tools available, you may be able to perform basic troubleshooting and repairs like checking connections and replacing the microphone. For more complex issues, it's recommended to seek professional help.

6. Will ignoring OBDII code B2455 in a 2017 GMC Sierra related to the Cellular Phone Microphone Circuit cause further damage?

- Ignoring the issue can lead to continued malfunctioning of the hands-free calling system and may affect the overall audio control module functionality, so it's best to address the problem promptly.

7. How much does it typically cost to repair OBDII code B2455 in a 2017 GMC Sierra related to the Cellular Phone Microphone Circuit?

- Repair costs can vary depending on the root cause of the issue, but expenses may include the price of a new microphone, wiring repairs, connector replacements, or audio control module reprogramming.

8. Are there any preventive measures to avoid OBDII code B2455 in a 2017 GMC Sierra related to the Cellular Phone Microphone Circuit?

- Regularly checking the condition of the cell phone microphone, ensuring proper wiring connections, and keeping the audio control module software up to date can help prevent issues leading to this OBDII code.

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