Engine-CodesChevrolet – B3935 2014 Chevrolet Silverado

B3935 2014 Chevrolet Silverado Code - Transponder Authentication

Quick Answer

The B3935 code for a 2014 Chevrolet Silverado relates to an issue with the transponder authentication system. Common causes include Faulty transponder key, Malfunctioning immobilizer system, Wiring or connection issues. 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
B3935 2014 Chevrolet Silverado indicates Transponder Authentication.
Common causes
Common causes include Faulty transponder key, Malfunctioning immobilizer system, Wiring or connection issues.
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.
Table of contents Created and updated by William Orellana on Aug 19, 2024
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Code B3935 2014 Chevrolet Silverado Description

The B3935 code for a 2014 Chevrolet Silverado relates to an issue with the transponder authentication system. This system is responsible for verifying the identity of the key being used to start the vehicle. When the transponder authentication fails, it can prevent the engine from starting or cause it to shut off unexpectedly. This code typically indicates a communication problem between the transponder key and the vehicle's immobilizer system, which could be due to a faulty key, a problem with the immobilizer system, or issues with the wiring or connections involved in the authentication process.

OBDII Code B3935 2014 Chevrolet Silverado - Transponder Authentication
B3935 2014 Chevrolet Silverado Code - Transponder Authentication

Common Causes of B3935 2014 Chevrolet Silverado

  1. Faulty transponder key
  2. Malfunctioning immobilizer system
  3. Wiring or connection issues
  4. Dead or weak key fob battery
  5. Interference from other electronic devices

Symptoms of B3935 2014 Chevrolet Silverado

  1. Engine cranks but does not start
  2. Engine starts but immediately shuts off
  3. Key fob not recognized by the vehicle
  4. Security light illuminated on the dashboard
  5. Vehicle goes into anti-theft mode

How to Fix B3935 2014 Chevrolet Silverado

  1. Check the transponder key battery and replace if necessary
  2. Inspect the wiring and connections related to the transponder authentication system
  3. Test the immobilizer system for faults and repair as needed
  4. Program a new transponder key if the old one is faulty
  5. Clear the code from the vehicle's computer system and perform a relearn procedure if necessary

Cost to Fix B3935 2014 Chevrolet Silverado

The cost to repair a transponder authentication issue can vary depending on the specific cause of the problem. Replacement transponder keys can range from $50 to $200, while diagnosing and repairing wiring or connection issues could cost between $100 and $300. If the immobilizer system needs to be replaced, the cost can range from $200 to $600. Labor costs will also factor into the total repair bill, with hourly rates typically ranging from $80 to $150. It's recommended to consult with a trusted mechanic to get an accurate estimate for your specific situation.

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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 B3935 2014 Chevrolet Silverado Code

1. What does OBDII code B3935 on a 2014 Chevrolet Silverado indicate?

- OBDII code B3935 on a 2014 Chevrolet Silverado relates to transponder authentication failure.

2. What are the common symptoms of OBDII code B3935 in a 2014 Chevrolet Silverado?

- Common symptoms include issues with starting the vehicle, intermittent stalling, and the security light staying on.

3. What are the possible causes of OBDII code B3935 in a 2014 Chevrolet Silverado?

- The code can be triggered by a faulty transponder key, a damaged transponder antenna, or a problem with the immobilizer system.

4. How can I diagnose the cause of OBDII code B3935 in my 2014 Chevrolet Silverado?

- Diagnosis involves checking the transponder key for damage, inspecting the transponder antenna for proper connection, and using diagnostic tools to analyze the immobilizer system.

5. Can I repair OBDII code B3935 in my 2014 Chevrolet Silverado myself?

- Repairing this code may require specialized equipment and knowledge. It is recommended to consult a professional mechanic or dealership for proper diagnosis and repair.

6. Are there any temporary solutions to try if I encounter OBDII code B3935 in my 2014 Chevrolet Silverado?

- You can attempt to reprogram the transponder key, ensure it is in good condition, and check for loose connections in the transponder antenna as temporary solutions.

7. Will OBDII code B3935 cause any long-term damage to my 2014 Chevrolet Silverado if left unresolved?

- Ignoring this code can lead to issues with starting the vehicle, potential stalling, and compromised security features. It is best to address the problem promptly to prevent further complications.

8. How much does it typically cost to repair OBDII code B3935 on a 2014 Chevrolet Silverado?

- The cost of repair can vary depending on the exact cause of the issue. It is advisable to get a diagnostic assessment from a professional to determine the total cost.

9. Can OBDII code B3935 be triggered by a dead or low battery in my 2014 Chevrolet Silverado?

- A dead or low battery can sometimes cause issues with the transponder authentication system, leading to the triggering of code B3935. Ensure your battery is in good condition.

10. Is it possible to prevent OBDII code B3935 from occurring in my 2014 Chevrolet Silverado?

- Regular maintenance of the transponder key, antenna, and immobilizer system can help prevent issues that may trigger code B3935.

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