AutoCodes – Chevrolet – B3902 2016 Chevrolet Silverado

B3902 2016 Chevrolet Silverado Code - Incorrect Immobilizer Identifier Received

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 Body Control Module (BCM), Body Control Module harness is open or shorted, Body 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: B3902 2016 Chevrolet Silverado indicates Incorrect Immobilizer Identifier Received.
Common causes: Common causes include Faulty Body Control Module (BCM), Body Control Module harness is open or shorted, Body 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 727

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B3902 2016 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 modules between vehicles. The Body Control Module (BCM) is the keeper of the environment identifier. The instrument cluster, electronic brake control module, HVAC control module, inflatable restraint sensing and diagnostic module, Engine Control Module (ECM), and steering column lock module (if equipped) 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 B3902 2016 Chevrolet Silverado - Incorrect Immobilizer Identifier Received - AutoCodes.com — B3902 2016 Chevrolet Silverado Code - Incorrect Immobilizer Identifier Received

What does this mean?

What are the Possible Causes of the DTC B3902 2016 Chevrolet Silverado?

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

How to Fix the DTC B3902 2016 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 B3902 2016 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 B3902 2016 Chevrolet Silverado code?

Need more information on how to fix the B3902 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B3902 2016 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

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 B3902 2016 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code B3902 in a 2016 Chevrolet Silverado?

The common symptoms include the vehicle not starting, the engine cranking but not starting, and the immobilizer light staying illuminated on the dashboard.

2. What does the OBDII code B3902 for "Incorrect Immobilizer Identifier Received" mean in a 2016 Chevrolet Silverado?

This code indicates a communication error between the vehicle's immobilizer system and the engine control module.

3. What are the possible causes of OBDII code B3902 in a 2016 Chevrolet Silverado?

Potential causes include a faulty immobilizer module, issues with the wiring or connections between the immobilizer and engine control module, or a problem with the engine control module itself.

4. How can I diagnose and repair OBDII code B3902 in my 2016 Chevrolet Silverado?

Diagnosis typically involves checking the wiring connections, inspecting the immobilizer module, and verifying the communication between the immobilizer and engine control module. Repair may involve replacing a faulty module, repairing wiring issues, or reprogramming the modules.

5. Can OBDII code B3902 in a 2016 Chevrolet Silverado be reset without fixing the underlying issue?

Resetting the code without addressing the root cause may temporarily clear the error code, but if the underlying issue is not resolved, the code is likely to reappear.

6. Is it safe to continue driving my 2016 Chevrolet Silverado with OBDII code B3902 present?

It is not recommended to drive the vehicle with this code active, as it may lead to starting issues or potential immobilization of the vehicle while driving.

7. How much does it typically cost to repair OBDII code B3902 in a 2016 Chevrolet Silverado?

The cost of repair can vary depending on the specific cause of the issue. It may range from a simple wiring repair to a more complex module replacement, so it's best to consult with a professional technician for an accurate estimate.

8. Can a DIY enthusiast fix OBDII code B3902 in a 2016 Chevrolet Silverado?

Depending on the cause of the issue, DIY enthusiasts with experience in automotive repair and access to proper diagnostic tools may be able to address simpler wiring or connection problems. However, more complex issues may require professional assistance.

9. Will OBDII code B3902 cause any long-term damage to my 2016 Chevrolet Silverado if left unresolved?

Leaving this issue unresolved may lead to further starting problems and potential immobilization of the vehicle. It is best to address the problem promptly to prevent any long-term damage.

10. How can I prevent OBDII code B3902 from occurring in my 2016 Chevrolet Silverado in the future?

Regular maintenance and inspection of the immobilizer system, wiring connections, and engine control modules can help prevent issues that may trigger this error code.