AutoCodes – Buick – B3927 Buick

B3927 Buick Code - Incorrect Environmental Identifier Received from Electronic Brake Control 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 Electronic Brake Control Module (EBCM), Electronic Brake Control Module harness is open or shorted, Electronic Brake Control 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: B3927 Buick indicates Incorrect Environmental Identifier Received from Electronic Brake Control Module.
Common causes: Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module harness is open or shorted, Electronic Brake Control 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 662

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 B3927 Buick 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 B3927 Buick - Incorrect Environmental Identifier Received from Electronic Brake Control Module - AutoCodes.com — B3927 Buick Code - Incorrect Environmental Identifier Received from Electronic Brake Control Module

What does this mean?

What are the Possible Causes of the DTC B3927 Buick?

Faulty Electronic Brake Control Module (EBCM)
Electronic Brake Control Module harness is open or shorted
Electronic Brake Control Module circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B3927 Buick?

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 B3927 Buick 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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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 B3927 Buick Code

1. What are the common symptoms of OBDII code B3927 in a Buick related to the Incorrect Environmental Identifier Received from Electronic Brake Control Module?

- Common symptoms include the ABS warning light being illuminated on the dashboard and potential issues with the vehicle's braking system.

2. What could be causing the OBDII code B3927 in a Buick?

- The code B3927 in a Buick is typically caused by a communication error between the electronic brake control module and other vehicle systems.

3. How serious is the OBDII code B3927 in a Buick?

- The code B3927 can affect the proper functioning of the anti-lock braking system (ABS) in your Buick, potentially compromising vehicle safety. It is recommended to address this issue promptly.

4. What can I do to repair OBDII code B3927 in my Buick?

- A common repair for code B3927 involves checking and repairing any wiring or connection issues between the electronic brake control module and the other related components.

5. Is it safe to drive my Buick with the OBDII code B3927 present?

- It is not recommended to drive your Buick with the code B3927 active, as it may lead to unpredictable behavior of the ABS system. It's best to address the issue before driving the vehicle.

6. Can I reset the OBDII code B3927 in my Buick by disconnecting the battery?

- While disconnecting the battery may temporarily clear the code, it is not a permanent solution. It's essential to diagnose and repair the underlying issue causing code B3927.

7. How can I prevent OBDII code B3927 from reoccurring in my Buick?

- Regular maintenance checks, ensuring proper connections, and addressing any electrical issues promptly can help prevent the recurrence of code B3927 in your Buick.

8. Will OBDII code B3927 cause my Buick to fail an emissions test?

- The code B3927 is related to the electronic brake control module and is not directly linked to emissions. However, it's still important to address the issue for overall vehicle performance.

9. Can a DIY enthusiast diagnose and fix OBDII code B3927 in a Buick?

- While some DIY enthusiasts may have the skills to diagnose and fix code B3927, it is recommended to consult a professional mechanic for accurate diagnosis and repair.

10. How long does it typically take to repair OBDII code B3927 in a Buick?

- The repair time for code B3927 can vary depending on the underlying cause. It may take anywhere from a few hours to a day, depending on the complexity of the issue and the availability of parts.