Engine-CodesGMC – B2455 2017 GMC Sierra

B2455 2017 GMC Sierra Code - Cellular Phone Microphone Circuit

Quick Answer

The B2455 diagnostic trouble code (DTC) for a 2017 GMC Sierra pertains to the Cellular Phone Microphone Circuit. Common causes include Faulty wiring in the cellular phone microphone circuit, Malfunctioning microphone, Damaged audio control module. 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 wiring in the cellular phone microphone circuit, Malfunctioning microphone, Damaged audio control module.
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.
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code B2455 2017 GMC Sierra Description

The B2455 diagnostic trouble code (DTC) for a 2017 GMC Sierra pertains to the Cellular Phone Microphone Circuit. This code indicates that there is a malfunction within the circuit that is responsible for transmitting audio from the cellular phone's microphone to the vehicle's audio system. In modern vehicles, this circuit is crucial for hands-free calling, voice commands, and other features that rely on the microphone for input.

OBDII Code B2455 2017 GMC Sierra - Cellular Phone Microphone Circuit
B2455 2017 GMC Sierra Code - Cellular Phone Microphone Circuit

Common Causes of B2455 2017 GMC Sierra

  1. Faulty wiring in the cellular phone microphone circuit
  2. Malfunctioning microphone
  3. Damaged audio control module
  4. Issues with the cellular phone connection
  5. Water damage or corrosion in the microphone circuit

Symptoms of B2455 2017 GMC Sierra

  1. Inability to use hands-free calling feature
  2. Voice commands not working properly
  3. Poor audio quality during phone calls
  4. Navigation system unable to recognize voice commands
  5. Vehicle settings not responding to voice inputs

How to Fix B2455 2017 GMC Sierra

  1. Begin by inspecting the wiring in the cellular phone microphone circuit for any signs of damage or disconnection.
  2. Test the microphone to ensure that it is functioning properly and transmitting audio signals.
  3. Check the audio control module for any faults or malfunctions that may be affecting the microphone circuit.
  4. If necessary, replace any damaged components and retest the system to ensure that the issue has been resolved.
  5. Clear the DTC using a diagnostic tool and test the hands-free calling feature to confirm that the repair was successful.

Cost to Fix B2455 2017 GMC Sierra

The typical repair costs for addressing the B2455 code in a 2017 GMC Sierra can vary depending on the extent of the issue and the specific components that need to be repaired or replaced. In general, the cost of parts for this repair can range from $50 to $200, while labor costs can add an additional $100 to $300 to the total bill. Overall, the total cost of addressing this issue can be expected to fall within the range of $150 to $500. However, it's important to note that these estimates are rough averages and actual costs may vary based on factors such as location, vehicle make and model, and the specific diagnosis and repair processes required. It's advisable to consult with a qualified mechanic or auto repair shop to obtain a more accurate estimate for addressing this issue.

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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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