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

Quick Answer

The B3806 Chevrolet code indicates a malfunction in the high beam and headlamp flash select circuit of the vehicle. Common causes include Faulty headlight switch, Wiring issues or shorts in the circuit, Defective 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 Chevrolet indicates High Beam and Headlamp Flash Select Circuit Malfunction.
Common causes
Common causes include Faulty headlight switch, Wiring issues or shorts in the circuit, Defective 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.
What is this?
Table of contents Created and updated by William Orellana on Aug 30, 2024
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Code B3806 Chevrolet Description

The B3806 Chevrolet code indicates a malfunction in the high beam and headlamp flash select circuit of the vehicle. This can affect the vehicle's lighting system, specifically the high beam headlights and the ability to flash the headlights. The high beam headlights provide enhanced visibility during nighttime driving or in low-light conditions. If this circuit malfunctions, it can impact the driver's ability to switch between high and low beams, potentially compromising visibility and safety.

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

Common Causes of B3806 Chevrolet

  1. Faulty headlight switch
  2. Wiring issues or shorts in the circuit
  3. Defective relay
  4. Malfunctioning control module
  5. Corrosion or damage to electrical connectors

Symptoms of B3806 Chevrolet

  1. Inability to switch between high and low beams
  2. High beams not working at all
  3. Headlights flashing intermittently
  4. Dim or flickering headlights
  5. Dashboard warning light indicating a headlight issue

How to Fix B3806 Chevrolet

  1. Start by inspecting the headlight switch, wiring, and connectors for any visible damage or corrosion.
  2. Test the relay and control module to determine if they are functioning correctly.
  3. Replace any faulty components such as the headlight switch, relay, or control module.
  4. Clear the diagnostic trouble codes and reset the system.
  5. Test the headlights to ensure they are functioning properly in both high and low beam modes.

Cost to Fix B3806 Chevrolet

The cost of repairing a high beam and headlamp flash select circuit malfunction can vary depending on the specific cause of the issue and the cost of parts and labor. In general, the repair for this type of issue may range from $100 to $300, including parts and labor. However, it is important to note that labor rates and diagnostic fees at auto repair shops can vary, so it is advisable to obtain a quote from a trusted mechanic before proceeding with the repair.

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Information for Specific Chevrolet Models

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 Chevrolet Code

1. What are the common symptoms of OBDII code B3806 in a Chevrolet related to the High Beam and Headlamp Flash Select Circuit Malfunction?

- Common symptoms include issues with the high beam headlights, malfunctioning headlamp flash select feature, and possibly a warning light on the dashboard.

2. What are the possible causes of OBDII code B3806 in a Chevrolet?

- Possible causes include a faulty high beam switch, damaged wiring or connectors in the headlamp circuit, or a malfunctioning headlamp flash select module.

3. How can I diagnose the High Beam and Headlamp Flash Select Circuit Malfunction in my Chevrolet when OBDII code B3806 is triggered?

- Diagnosis typically involves checking the high beam switch operation, inspecting the wiring and connectors in the headlamp circuit, and testing the headlamp flash select module for proper function.

4. Can I still drive my Chevrolet with OBDII code B3806 present?

- It is generally safe to drive with this code, but it is important to address the underlying issue promptly to ensure proper headlight functionality.

5. How can I repair OBDII code B3806 in my Chevrolet?

- Repair may involve replacing the high beam switch, repairing damaged wiring or connectors, or replacing the headlamp flash select module as needed.

6. Is it possible for a blown fuse to cause OBDII code B3806 in a Chevrolet?

- Yes, a blown fuse in the headlamp circuit can cause the High Beam and Headlamp Flash Select Circuit Malfunction and trigger code B3806.

7. Are there any DIY tips for troubleshooting OBDII code B3806 in a Chevrolet?

- DIY tips include visually inspecting the headlamp circuit for any visible damage, checking the high beam switch for proper operation, and testing the headlamp flash select module.

8. How do I reset the OBDII code B3806 in my Chevrolet after repairing the issue?

- The code can be reset using an OBDII scanner or by disconnecting the car's battery for a few minutes to clear the fault codes.

9. Can extreme weather conditions affect the High Beam and Headlamp Flash Select Circuit Malfunction in a Chevrolet?

- Yes, extreme weather conditions such as heavy rain or snow can potentially cause electrical issues in the headlamp circuit, leading to this malfunction.

10. Is it necessary to visit a mechanic for OBDII code B3806 repair, or can I fix it myself?

- Depending on your automotive repair skills and tools, you may be able to fix the issue yourself. However, if you are unsure or uncomfortable with electrical repairs, it is recommended to seek professional help.

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