AutoCodes – Chevrolet – B3924 2018 Chevrolet Silverado

B3924 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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 396

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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado - Incorrect Environmental Identifier Received from Inflatable Restraint Sensing and Diagnostic Module - AutoCodes.com — B3924 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado?

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 2018 Chevrolet Silverado?

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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code B3924 in a 2018 Chevrolet Silverado?

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

2. What does the OBDII code B3924 indicate in a 2018 Chevrolet Silverado?

The code B3924 indicates that the Inflatable Restraint Sensing and Diagnostic Module has detected an incorrect environmental identifier.

3. What could cause the OBDII code B3924 to trigger in a 2018 Chevrolet Silverado?

The code B3924 can be triggered due to a faulty Inflatable Restraint Sensing and Diagnostic Module, wiring issues, or environmental factors affecting the module's functioning.

4. How serious is the OBDII code B3924 in a 2018 Chevrolet Silverado?

The code B3924 should be taken seriously as it pertains to the vehicle's airbag system, which plays a crucial role in occupant safety during a collision.

5. Can I continue driving my 2018 Chevrolet Silverado with the OBDII code B3924 present?

It is not recommended to continue driving the vehicle with the code B3924 present, as it indicates a potential issue with the airbag system that could compromise safety.

6. How can I diagnose and repair the OBDII code B3924 in my 2018 Chevrolet Silverado?

Diagnosing and repairing the code B3924 typically involves inspecting the Inflatable Restraint Sensing and Diagnostic Module, checking the wiring for any faults, and resetting the system as needed.

7. Is it safe to reset the OBDII code B3924 in a 2018 Chevrolet Silverado?

Resetting the code B3924 may temporarily turn off the warning light, but it is essential to diagnose the underlying issue and ensure the airbag system is functioning correctly for safety reasons.

8. Can environmental factors like extreme temperatures trigger the OBDII code B3924 in a 2018 Chevrolet Silverado?

Yes, extreme temperatures or other environmental factors can affect the functioning of the Inflatable Restraint Sensing and Diagnostic Module, leading to the code B3924 being triggered.

9. How much does it cost to repair the OBDII code B3924 in a 2018 Chevrolet Silverado?

The cost of repairing the code B3924 can vary depending on the root cause of the issue, but it is advisable to consult a professional mechanic for an accurate diagnosis and repair estimate.

10. Will fixing the OBDII code B3924 in my 2018 Chevrolet Silverado require replacement parts?

Depending on the diagnosis, fixing the code B3924 may involve replacing the Inflatable Restraint Sensing and Diagnostic Module, repairing wiring, or addressing any other components contributing to the issue.