AutoCodes – Generic – B2455

B2455 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 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 10,078

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 26, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2455 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 - Cellular Phone Microphone Circuit - AutoCodes.com — B2455 Code - Cellular Phone Microphone Circuit

What does this mean?

What are the Possible Causes of the DTC B2455?

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?

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 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 code?

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

Need Help with the Code?

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

Information for Specific Makes

B2455 Buick — Cellular Phone Microphone Circuit
B2455 Cadillac — Cellular Phone Microphone Circuit
B2455 Chevrolet — Cellular Phone Microphone Circuit
B2455 GMC — Cellular Phone Microphone Circuit

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 Code

What does the OBDII code B2455 mean?

The OBDII code B2455 refers to an issue with the Cellular Phone Microphone Circuit, indicating a malfunction in the microphone system used for hands-free communication.

What are common symptoms associated with the B2455 code?

Common symptoms may include the inability to use hands-free calling, poor audio quality during calls, or the microphone not picking up sound at all.

What are the potential causes of the B2455 code?

Potential causes can include a faulty microphone, damaged wiring or connectors, issues with the vehicle's audio system, or a malfunctioning control module.

How can I diagnose the B2455 code?

To diagnose the B2455 code, check the microphone and its connections for damage, inspect the wiring for shorts or breaks, and test the vehicle's audio system to ensure it is functioning properly.

What repairs are needed for the B2455 code?

Repairs may involve replacing the microphone, repairing or replacing damaged wiring, or reprogramming or replacing the control module if it is found to be faulty.

Can I clear the B2455 code without fixing the issue?

While you can clear the B2455 code using an OBDII scanner, the code will likely return if the underlying issue is not addressed.

Is a professional diagnostic necessary for B2455?

While some DIY diagnostics can be performed, a professional diagnostic is recommended for accurate identification and repair of complex issues related to the vehicle's audio system.

Are there any related codes that might appear with B2455?

Yes, related codes may include those for other audio system components or communication errors within the vehicle's electronics, which could indicate a broader issue.

How can I prevent future issues with the Cellular Phone Microphone Circuit?

To prevent future issues, ensure that all connections are secure, avoid exposing the microphone to moisture, and regularly check the audio system for any signs of malfunction.