AutoCodes – GMC – B3924 2014 GMC Sierra

B3924 2014 GMC Sierra Code - Incorrect Environmental Identifier Received from Inflatable Restraint Sensing and Diagnostic Module

Quick Answer

When certain modules are programmed and configured during installation, the module learns a specific environment identifier which is unique to the vehicle. Common causes include Faulty Inflatable Restraint Sensing and Diagnostic Module, Inflatable Restraint Sensing and Diagnostic Module harness is open or shorted, Inflatable Restraint Sensing and Diagnostic Module 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: B3924 2014 GMC Sierra indicates Incorrect Environmental Identifier Received from Inflatable Restraint Sensing and Diagnostic Module.
Common causes: Common causes include Faulty Inflatable Restraint Sensing and Diagnostic Module, Inflatable Restraint Sensing and Diagnostic Module harness is open or shorted, Inflatable Restraint Sensing and Diagnostic Module 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 206

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 Jun 16, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3924 2014 GMC Sierra Description

When certain modules are programmed and configured during installation, the module learns a specific environment identifier which is unique to the vehicle. The environment identifier is used to prevent the swapping of control modules between vehicles. The Body Control Module (BCM) is the keeper of the environment identifier. The instrument cluster, electronic brake control module, Heating, Ventilation, and Air Conditioning (HVAC) Control Module, inflatable restraint sensing and diagnostic module, and telematics communication interface control module each learn the environment identifier during their configuration process. During vehicle operation, the BCM sends the immobilizer identifier as a challenge and each module responds to the challenge by sending the environment identifier back to the BCM. If the BCM sends an incorrect immobilizer identifier or a specific number of incorrect environment identifiers are received, vehicle starting is disabled.
The Diagnostic Trouble Code (DTC) sets when the control module's environment identifier does not match the environment identifier stored by the BCM.

OBDII Code B3924 2014 GMC Sierra - Incorrect Environmental Identifier Received from Inflatable Restraint Sensing and Diagnostic Module - AutoCodes.com — B3924 2014 GMC Sierra Code - Incorrect Environmental Identifier Received from Inflatable Restraint Sensing and Diagnostic Module

What does this mean?

What are the Possible Causes of the DTC B3924 2014 GMC Sierra?

Faulty Inflatable Restraint Sensing and Diagnostic Module
Inflatable Restraint Sensing and Diagnostic Module harness is open or shorted
Inflatable Restraint Sensing and Diagnostic Module circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B3924 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 B3924 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 B3924 2014 GMC Sierra code?

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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 B3924 2014 GMC Sierra Code

1. What are the common symptoms of OBDII code B3924 in a 2014 GMC Sierra?

The common symptoms of code B3924 include the airbag warning light illuminating on the dashboard and potential issues with the vehicle's restraint system.

2. What does the OBDII code B3924 mean for a 2014 GMC Sierra?

Code B3924 indicates that the Inflatable Restraint Sensing and Diagnostic Module has received an incorrect environmental identifier, suggesting a communication problem within the airbag system.

3. What are the possible causes of OBDII code B3924 in a 2014 GMC Sierra?

Potential causes of code B3924 include faulty wiring connections, a malfunctioning Inflatable Restraint Sensing and Diagnostic Module, damaged sensors, or a communication error within the airbag system.

4. How serious is OBDII code B3924 in a 2014 GMC Sierra?

Code B3924 should be taken seriously, as it relates to the proper functioning of the vehicle's airbag system. It is important to address this issue promptly to ensure the safety features of the vehicle are functioning correctly.

5. How can I diagnose OBDII code B3924 in my 2014 GMC Sierra?

Diagnosing code B3924 typically involves using a diagnostic scanner to retrieve the specific error code, inspecting the airbag system components for damage or loose connections, and testing the sensors and modules for proper functionality.

6. Can I drive my 2014 GMC Sierra with OBDII code B3924 present?

It is not recommended to drive the vehicle with code B3924 present, as it indicates a potential issue with the airbag system. Driving with a malfunctioning airbag system can compromise the safety of the vehicle occupants in the event of a collision.

7. How can I repair OBDII code B3924 in my 2014 GMC Sierra?

Repairing code B3924 may involve fixing any wiring issues, replacing damaged sensors or modules, or reprogramming the Inflatable Restraint Sensing and Diagnostic Module. It is advisable to consult a professional mechanic for an accurate diagnosis and repair.

8. Is it possible to reset OBDII code B3924 in a 2014 GMC Sierra?

While you can clear the error code using a diagnostic scanner, it is essential to address the underlying cause of code B3924 to prevent it from reoccurring. Simply resetting the code without fixing the root problem may lead to ongoing issues with the airbag system.

9. Are there any safety precautions I should take if OBDII code B3924 is present in my 2014 GMC Sierra?

If code B3924 is present, it is crucial to prioritize safety by avoiding aggressive driving, ensuring all occupants wear seat belts, and promptly addressing the airbag system issue to maintain the vehicle's safety features.

10. How much does it typically cost to repair OBDII code B3924 in a 2014 GMC Sierra?

The cost of repairing code B3924 can vary depending on the specific cause of the issue, the parts needed for replacement, and the labor rates of the repair shop. It is advisable to obtain quotes from different mechanics to compare prices for the necessary repairs.