AutoCodes – GMC – B2455 2015 GMC Sierra

B2455 2015 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 2015 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 201
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 2015 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 2015 GMC Sierra - Cellular Phone Microphone Circuit - AutoCodes.com
B2455 2015 GMC Sierra Code - Cellular Phone Microphone Circuit

What are the Possible Causes of the DTC B2455 2015 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 2015 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 2015 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 2015 GMC Sierra code?

Need more information on how to fix the B2455 2015 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2455 2015 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 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code B2455 in a 2015 GMC Sierra related to the Cellular Phone Microphone Circuit?

- Common symptoms include issues with hands-free calling, poor sound quality during phone calls, or complete loss of microphone functionality.

2. What are the possible causes of OBDII code B2455 in a 2015 GMC Sierra?

- The code may be triggered due to a faulty cellular phone microphone, damaged wiring in the microphone circuit, or a malfunctioning control module.

3. How can I diagnose the cause of OBDII code B2455 in my 2015 GMC Sierra?

- A thorough inspection of the cellular phone microphone, checking for wiring damage, and using a diagnostic scanner to identify the exact issue are recommended diagnostic steps.

4. Can a DIY enthusiast repair OBDII code B2455 in a 2015 GMC Sierra related to the Cellular Phone Microphone Circuit?

- Depending on the specific cause, DIY repairs such as replacing the microphone, repairing damaged wires, or resetting the control module may be possible for those with automotive repair experience.

5. Is it safe to continue driving my 2015 GMC Sierra with OBDII code B2455 related to the Cellular Phone Microphone Circuit?

- While the vehicle may still be operable, it is recommended to address the issue promptly to ensure proper functioning of the hands-free calling system and avoid potential distractions while driving.

6. How much can I expect to pay for professional repairs of OBDII code B2455 in a 2015 GMC Sierra?

- The cost of repairs can vary depending on the exact cause of the issue, but it is advisable to budget for diagnostic fees, replacement parts, and labor costs when seeking professional help.

7. Are there any temporary solutions to address OBDII code B2455 in a 2015 GMC Sierra until I can get it repaired?

- Disconnecting the phone from the vehicle's Bluetooth system or using an external microphone may serve as temporary workarounds until a proper repair can be made.

8. Will resetting the OBDII code B2455 in my 2015 GMC Sierra make the issue go away permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying issue with the Cellular Phone Microphone Circuit is not addressed, the code is likely to reappear.

9. Can extreme weather conditions affect the occurrence of OBDII code B2455 in a 2015 GMC Sierra?

- Yes, extreme heat or cold can sometimes lead to wiring issues or component failures in the cellular phone microphone circuit, potentially triggering the B2455 code.

10. How long does it typically take to repair OBDII code B2455 in a 2015 GMC Sierra at a professional repair shop?

- The repair time can vary based on the exact cause of the issue and the availability of replacement parts, but it is advisable to consult with the repair shop for a more accurate estimate.

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