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Engine-Codes – Chevrolet – B3902 2016 Chevrolet Silverado

B3902 2016 Chevrolet Silverado Code - Incorrect Immobilizer Identifier Received

Quick Answer

The B3902 diagnostic trouble code (DTC) in a 2016 Chevrolet Silverado indicates that the vehicle's immobilizer system has detected an incorrect identifier. Common causes include Faulty immobilizer control module, Defective key fob or key transponder, Wiring issues in the immobilizer system. 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 immobilizer control module, Defective key fob or key transponder, Wiring issues in the immobilizer system.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 18, 2024
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Code B3902 2016 Chevrolet Silverado Description

The B3902 diagnostic trouble code (DTC) in a 2016 Chevrolet Silverado indicates that the vehicle's immobilizer system has detected an incorrect identifier. The immobilizer system is a security feature that prevents the engine from starting unless the correct key or key fob is used. When the system receives an incorrect identifier, it will disable the engine start function, leading to a no-start condition.

OBDII Code B3902 2016 Chevrolet Silverado - Incorrect Immobilizer Identifier Received
B3902 2016 Chevrolet Silverado Code - Incorrect Immobilizer Identifier Received

Common Causes of B3902 2016 Chevrolet Silverado

  1. Faulty immobilizer control module
  2. Defective key fob or key transponder
  3. Wiring issues in the immobilizer system
  4. Low battery voltage affecting the immobilizer system
  5. Incorrect programming of the immobilizer system

Symptoms of B3902 2016 Chevrolet Silverado

  1. Engine cranks but does not start
  2. Security light flashing on the dashboard
  3. Inability to start the engine with the correct key
  4. Immobilizer warning message on the instrument cluster

How to Fix B3902 2016 Chevrolet Silverado

  1. Perform a diagnostic scan to retrieve the specific immobilizer code and identify the root cause of the issue.
  2. Inspect the key fob and key transponder for any damage or malfunctions. Replace if necessary.
  3. Check the wiring connections in the immobilizer system for any loose or damaged wires. Repair or replace as needed.
  4. Test the immobilizer control module for proper functioning. Replace if found to be faulty.
  5. Reprogram the immobilizer system to ensure proper communication with the key fob and key transponder.

Cost to Fix B3902 2016 Chevrolet Silverado

The typical repair costs for addressing the B3902 code in a 2016 Chevrolet Silverado can range from $200 to $500, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It is advisable to check local rates for a more precise estimate. Most auto repair shops commonly charge between $80 and $150 per hour, with rates potentially higher at dealerships or in metropolitan areas, and lower at independent shops.

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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 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.

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