AutoCodes – GMC – B2455 2014 GMC Sierra

B2455 2014 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 2014 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 305
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 2014 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 2014 GMC Sierra - Cellular Phone Microphone Circuit - AutoCodes.com
B2455 2014 GMC Sierra Code - Cellular Phone Microphone Circuit

What are the Possible Causes of the DTC B2455 2014 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 2014 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 2014 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 2014 GMC Sierra code?

Need more information on how to fix the B2455 2014 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2455 2014 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 2014 GMC Sierra Code

1. What are common symptoms of OBDII code B2455 in a 2014 GMC Sierra related to the Cellular Phone Microphone Circuit?

The common symptoms include malfunctioning hands-free calling, poor voice recognition, and issues with Bluetooth connectivity.

2. What are the possible causes of OBDII code B2455 in a 2014 GMC Sierra?

The code B2455 in a 2014 GMC Sierra typically indicates a malfunction in the cellular phone microphone circuit, which can be caused by a faulty microphone, wiring issues, or a defective control module.

3. How can I diagnose the OBDII code B2455 in my 2014 GMC Sierra related to the Cellular Phone Microphone Circuit?

Diagnosing code B2455 may involve checking the microphone for physical damage, inspecting the wiring for shorts or breaks, and using a scan tool to communicate with the vehicle's control modules for further diagnosis.

4. Can I repair OBDII code B2455 in my 2014 GMC Sierra related to the Cellular Phone Microphone Circuit myself?

Depending on the underlying cause, you may be able to repair the issue yourself if you have the necessary tools and expertise. However, it is recommended to consult a professional mechanic for accurate diagnosis and repair.

5. Is it safe to continue driving my 2014 GMC Sierra with OBDII code B2455 related to the Cellular Phone Microphone Circuit?

While the vehicle may still be operational with this code, it is important to address the issue promptly to ensure proper functionality of the hands-free calling system and avoid potential safety hazards.

6. Can a software update fix OBDII code B2455 in a 2014 GMC Sierra related to the Cellular Phone Microphone Circuit?

In some cases, a software update from the manufacturer may resolve the issue if it is related to a known software bug affecting the cellular phone microphone circuit.

7. How much does it typically cost to repair OBDII code B2455 in a 2014 GMC Sierra related to the Cellular Phone Microphone Circuit?

The cost of repairing OBDII code B2455 can vary depending on the underlying cause of the issue, the labor rates of the repair shop, and the cost of any replacement parts that may be needed.

8. Will resetting the OBDII code B2455 in my 2014 GMC Sierra related to the Cellular Phone Microphone Circuit make it go away permanently?

Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to reappear. It is important to diagnose and repair the root cause of the problem.

9. Are there any preventive measures I can take to avoid OBDII code B2455 in my 2014 GMC Sierra related to the Cellular Phone Microphone Circuit?

Regularly inspecting the hands-free calling system, including the microphone and wiring, for any signs of damage or wear can help prevent issues that may trigger OBDII code B2455.

10. Can a disconnected or damaged cellular phone affect OBDII code B2455 in a 2014 GMC Sierra related to the Cellular Phone Microphone Circuit?

Yes, if the cellular phone is not properly connected or if it is damaged, it can potentially cause issues with the hands-free calling system, triggering OBDII code B2455 in the vehicle.

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