Engine-CodesChevrolet – B3806 2016 Chevrolet Silverado

B3806 2016 Chevrolet Silverado Code - High Beam and Headlamp Flash Select Circuit Malfunction

Quick Answer

The B3806 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado indicates a malfunction in the high beam and headlamp flash select circuit. Common causes include Faulty wiring or connections in the high beam circuit, Malfunctioning headlight switch, Defective high beam relay. 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
B3806 2016 Chevrolet Silverado indicates High Beam and Headlamp Flash Select Circuit Malfunction.
Common causes
Common causes include Faulty wiring or connections in the high beam circuit, Malfunctioning headlight switch, Defective high beam relay.
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 Sep 12, 2024
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Code B3806 2016 Chevrolet Silverado Description

The B3806 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado indicates a malfunction in the high beam and headlamp flash select circuit. This code is triggered when the vehicle's onboard computer detects an issue with the circuit responsible for controlling the high beam headlights and the headlamp flash feature. The high beam headlights provide increased visibility during nighttime driving or in low-light conditions, while the headlamp flash feature allows the driver to quickly flash the high beams as a signal to other drivers.

OBDII Code B3806 2016 Chevrolet Silverado - High Beam and Headlamp Flash Select Circuit Malfunction
B3806 2016 Chevrolet Silverado Code - High Beam and Headlamp Flash Select Circuit Malfunction

Common Causes of B3806 2016 Chevrolet Silverado

  1. Faulty wiring or connections in the high beam circuit
  2. Malfunctioning headlight switch
  3. Defective high beam relay
  4. Issues with the control module managing high beam and headlamp flash functions

Symptoms of B3806 2016 Chevrolet Silverado

  1. High beam headlights not working
  2. Headlamp flash feature not functioning
  3. Dim or flickering headlights
  4. Dashboard warning light indicating a lighting system issue

How to Fix B3806 2016 Chevrolet Silverado

  1. Begin by conducting a thorough visual inspection of the high beam circuit, checking for any loose connections, damaged wiring, or corroded terminals.
  2. Test the headlight switch and high beam relay to determine if they are functioning correctly. Replace any components that are found to be faulty.
  3. Use a multimeter to test the voltage and continuity in the circuit, ensuring that power is reaching the high beam headlights and the headlamp flash feature.
  4. If the issue persists, consult the vehicle's wiring diagram to trace the circuit and identify any potential areas of concern. Address any wiring issues or component failures as needed.

Cost to Fix B3806 2016 Chevrolet Silverado

The typical repair costs for addressing a high beam and headlamp flash select circuit malfunction can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts for this repair could range from $50 to $200, while labor costs may range from $100 to $300. Keep in mind that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and the shop's labor rates. It is advisable to obtain a detailed quote from a qualified auto repair shop to determine the precise cost of addressing this issue for a 2016 Chevrolet Silverado.

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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 B3806 2016 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code B3806 in a 2016 Chevrolet Silverado?

- Common symptoms include issues with the high beam headlights not functioning properly, the high beam indicator not working, and the inability to switch between high beam and low beam settings.

2. What causes the OBDII code B3806 to trigger in a 2016 Chevrolet Silverado?

- The code B3806 is typically triggered by a malfunction in the high beam and headlamp flash select circuit, which can be caused by wiring issues, a faulty headlight switch, or a problem with the control module.

3. How can I diagnose the high beam and headlamp flash select circuit malfunction in my 2016 Chevrolet Silverado?

- Diagnosing the issue involves checking the wiring for any damage or loose connections, testing the headlight switch for proper functionality, and using a diagnostic scanner to read the trouble codes stored in the vehicle's system.

4. Can I still drive my 2016 Chevrolet Silverado with the OBDII code B3806?

- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to ensure proper functioning of the high beam headlights and headlamp flash select circuit.

5. How can I repair the high beam and headlamp flash select circuit malfunction in my 2016 Chevrolet Silverado?

- Repairing the issue may involve repairing or replacing damaged wiring, replacing the headlight switch if faulty, or addressing any issues with the control module. It is recommended to consult a professional mechanic for accurate diagnosis and repair.

6. Will resetting the OBDII code B3806 in my 2016 Chevrolet Silverado make the issue go away?

- Resetting the code may temporarily turn off the warning light, but it will not fix the underlying issue causing the high beam and headlamp flash select circuit malfunction. It is important to address the root cause of the problem.

7. How much does it typically cost to repair the OBDII code B3806 in a 2016 Chevrolet Silverado?

- The cost of repair can vary depending on the specific cause of the issue and the labor rates of the repair shop. Costs may range from a simple wiring repair to more extensive repairs involving the replacement of components.

8. Can extreme weather conditions affect the high beam and headlamp flash select circuit in a 2016 Chevrolet Silverado?

- Yes, extreme weather conditions such as excessive heat or moisture can potentially damage the wiring or components related to the high beam and headlamp flash select circuit, leading to malfunctions and triggering the OBDII code B3806.

9. Is the OBDII code B3806 a common issue in 2016 Chevrolet Silverado vehicles?

- While not extremely common, the OBDII code B3806 related to the high beam and headlamp flash select circuit malfunction can occur in 2016 Chevrolet Silverado vehicles due to various factors such as wiring issues or component failures.

10. Can I prevent the OBDII code B3806 from occurring in my 2016 Chevrolet Silverado?

- Regular maintenance, such as checking and ensuring the integrity of the wiring, promptly addressing any headlight issues, and keeping the vehicle's electrical system in good condition, can help prevent the occurrence of the high beam and headlamp flash select circuit malfunction and the associated OBDII code B3806.

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