AutoCodes – Chevrolet – B3928 Chevrolet

B3928 Chevrolet Code - Incorrect Environmental Identifier Received from Telematics Communication Interface 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 Telematics Communication Interface Control Module, Telematics Communication Interface Control Module harness is open or shorted, Telematics Communication Interface 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: B3928 Chevrolet indicates Incorrect Environmental Identifier Received from Telematics Communication Interface Control Module.
Common causes: Common causes include Faulty Telematics Communication Interface Control Module, Telematics Communication Interface Control Module harness is open or shorted, Telematics Communication Interface 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 868

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 B3928 Chevrolet 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 B3928 Chevrolet - Incorrect Environmental Identifier Received from Telematics Communication Interface Control Module - AutoCodes.com — B3928 Chevrolet Code - Incorrect Environmental Identifier Received from Telematics Communication Interface Control Module

What does this mean?

What are the Possible Causes of the DTC B3928 Chevrolet?

Faulty Telematics Communication Interface Control Module
Telematics Communication Interface Control Module harness is open or shorted
Telematics Communication Interface Control Module circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B3928 Chevrolet?

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 B3928 Chevrolet 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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Information for Specific Chevrolet Models

B3928 2014 Chevrolet Silverado — Incorrect Environmental Identifier Received from Telematics Communication Interface Control Module
B3928 2015 Chevrolet Silverado — Incorrect Environmental Identifier Received from Telematics Communication Interface Control Module
B3928 2016 Chevrolet Silverado — Incorrect Environmental Identifier Received from Telematics Communication Interface Control Module
B3928 2017 Chevrolet Silverado — Incorrect Environmental Identifier Received from Telematics Communication Interface Control Module
B3928 2018 Chevrolet Silverado — Incorrect Environmental Identifier Received from Telematics Communication Interface Control Module

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 B3928 Chevrolet Code

1. What are the common symptoms of OBDII code B3928 in a Chevrolet vehicle?

The common symptoms include issues with the vehicle's telematics system, such as loss of communication with the control module, malfunctioning GPS or navigation system, and potential warning lights on the dashboard.

2. What can cause the OBDII code B3928 to trigger in a Chevrolet?

The code B3928 is triggered when the Telematics Communication Interface Control Module receives an incorrect environmental identifier. This can be caused by a faulty control module, wiring issues, or software communication errors.

3. How serious is the OBDII code B3928 in a Chevrolet?

While the code itself may not directly affect the drivability of the vehicle, it can impact the functionality of the telematics system, which may affect features like GPS navigation, emergency services, and remote diagnostics.

4. How can I diagnose the OBDII code B3928 in my Chevrolet?

Diagnosing the code typically involves using a diagnostic scanner to communicate with the Telematics Communication Interface Control Module and checking for any stored codes related to the incorrect environmental identifier.

5. Can I repair the OBDII code B3928 in my Chevrolet myself?

Repairing the code usually requires specialized knowledge and tools to diagnose and fix the underlying issue. It is recommended to seek assistance from a qualified mechanic or dealership to properly address the problem.

6. Is it safe to continue driving with the OBDII code B3928 in a Chevrolet?

While the vehicle may still be operable with the code present, it is advisable to address the issue promptly to ensure the proper functioning of the telematics system and to prevent any potential future complications.

7. How much does it cost to repair the OBDII code B3928 in a Chevrolet?

The cost of repair can vary depending on the underlying cause of the issue. It is recommended to obtain a diagnostic evaluation from a professional to determine the exact repair cost.

8. Can resetting the OBDII system clear the B3928 code in a Chevrolet?

Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear. It is crucial to diagnose and fix the root cause of the problem.

9. Are there any recalls or technical service bulletins related to the OBDII code B3928 in Chevrolet vehicles?

It is advisable to check with Chevrolet dealership or visit the National Highway Traffic Safety Administration (NHTSA) website to see if there are any relevant recalls or technical service bulletins related to this code.

10. How can I prevent the OBDII code B3928 from occurring in my Chevrolet in the future?

Regular maintenance checks, proper care of the vehicle's electronic systems, and addressing any warning signs promptly can help prevent the occurrence of OBDII code B3928 and other related issues.