AutoCodes – Generic – B2476

B2476 Code - Cellular Phone Select Service Switch

Quick Answer

The OnStar® button assembly consists of 3 buttons: Call/Answer, OnStar® Call Center, and OnStar® Emergency. Common causes include Faulty Inside Rearview Mirror, Inside Rearview Mirror harness is open or shorted, Inside Rearview Mirror 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: B2476 indicates Cellular Phone Select Service Switch.
Common causes: Common causes include Faulty Inside Rearview Mirror, Inside Rearview Mirror harness is open or shorted, Inside Rearview Mirror 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 13,694

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 May 01, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B2476 Description

The OnStar® button assembly consists of 3 buttons: Call/Answer, OnStar® Call Center, and OnStar® Emergency. The Telematics Communication Interface Control Module supplies the OnStar® button assembly with 10 V via the 10 V reference circuit. When pressed, each button completes the circuit across a resistor or set of resistors allowing a specific voltage to be returned to the Telematics Communication Interface Control Module over the signal circuit. Depending upon the voltage range returned, the Telematics Communication Interface Control Module is able to identify which button has been pressed. The Diagnostic Trouble Code (DTC) will be set when the Telematics Communication Interface Control Module detects a failure on the 10 V reference circuit.

OBDII Code B2476 - Cellular Phone Select Service Switch - AutoCodes.com — B2476 Code - Cellular Phone Select Service Switch

What does this mean?

What are the Possible Causes of the DTC B2476?

Faulty Inside Rearview Mirror
Inside Rearview Mirror harness is open or shorted
Inside Rearview Mirror circuit poor electrical connection
Faulty Telematics Communication Interface Control Module

How to Fix the DTC B2476?

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 does this mean?

Code Tech Notes

B2476:04 Cellular Phone Select Service Switch Open
B2476:59 Cellular Phone Select Service Switch Protection Time-out

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2476 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.

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Need Help with the Code?

Get the B2476 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B2476 Buick — Cellular Phone Select Service Switch
B2476 Cadillac — Cellular Phone Select Service Switch
B2476 Chevrolet — Cellular Phone Select Service Switch
B2476 GMC — Cellular Phone Select Service Switch

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 B2476 Code

1. What are the common symptoms of OBDII code B2476 - Cellular Phone Select Service Switch?

The common symptoms of code B2476 include issues with the vehicle's cellular phone system, such as the inability to connect to the service provider or make/receive calls.

2. What are the possible causes of OBDII code B2476?

Possible causes of code B2476 can include a malfunctioning cellular phone module, wiring issues, a faulty select service switch, or problems with the vehicle's communication network.

3. How can I diagnose OBDII code B2476?

Diagnosing code B2476 typically involves using a diagnostic scanner to retrieve the specific fault codes stored in the vehicle's computer system related to the cellular phone select service switch. Additionally, conducting a visual inspection of the wiring and components involved can help pinpoint the issue.

4. What are some repair tips for fixing OBDII code B2476?

Repairing code B2476 may involve resetting the vehicle's computer system, checking and repairing any damaged wiring, replacing the cellular phone module or select service switch, and ensuring all connections are secure and functioning properly.

5. Can I drive my vehicle with OBDII code B2476?

While it may be possible to drive the vehicle with code B2476, it is not recommended, as the issue with the cellular phone system can affect other vehicle functions and potentially lead to more serious problems. It is best to address the underlying cause of the code as soon as possible.

6. How do I reset OBDII code B2476?

To reset code B2476, you can use a diagnostic scanner to clear the fault codes stored in the vehicle's computer system. However, it is important to address the root cause of the code to prevent it from reoccurring.

7. Is OBDII code B2476 a common issue in certain vehicle makes and models?

Code B2476 related to the cellular phone select service switch can be more common in vehicles equipped with advanced infotainment systems that include cellular connectivity features. It is always recommended to check the specific diagnostic information for your vehicle make and model.

8. Can a DIY enthusiast fix OBDII code B2476 at home?

Fixing code B2476 may be possible for DIY enthusiasts with the necessary tools, knowledge, and experience working on automotive electrical systems. However, if you are unsure about diagnosing or repairing the issue, it is best to consult a professional mechanic.

9. Are there any recalls related to OBDII code B2476?

Recalls related to code B2476 may vary depending on the vehicle make and model. It is advisable to check with the vehicle manufacturer or visit the National Highway Traffic Safety Administration (NHTSA) website for any relevant recall information.

10. How much does it typically cost to repair OBDII code B2476?

The cost of repairing code B2476 can vary depending on the underlying cause of the issue, the labor rates of the repair shop, and the cost of any replacement parts needed. It is recommended to obtain quotes from different mechanics or dealerships to compare prices before proceeding with the repair.