B3806 2015 Chevrolet Silverado Code - High Beam and Headlamp Flash Select Circuit Malfunction
Quick Answer
The B3806 diagnostic trouble code (DTC) for a 2015 Chevrolet Silverado indicates a malfunction in the high beam and headlamp flash select circuit. Common causes include Faulty high beam switch, Damaged wiring harness, Malfunctioning headlight control module. 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 2015 Chevrolet Silverado indicates High Beam and Headlamp Flash Select Circuit Malfunction.
- Common causes
- Common causes include Faulty high beam switch, Damaged wiring harness, Malfunctioning headlight control module.
- 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.
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Code B3806 2015 Chevrolet Silverado Description
The B3806 diagnostic trouble code (DTC) for a 2015 Chevrolet Silverado indicates a malfunction in the high beam and headlamp flash select circuit. This code is typically triggered when the vehicle's onboard diagnostic system detects an issue with the circuit responsible for controlling the high beam headlights and the headlamp flash function.
Common Causes of B3806 2015 Chevrolet Silverado
- Faulty high beam switch
- Damaged wiring harness
- Malfunctioning headlight control module
- Issue with the body control module
- Electrical short circuits
Symptoms of B3806 2015 Chevrolet Silverado
- High beam headlights not working properly
- Inability to flash the headlights
- Dashboard warning lights related to the lighting system
- Flickering or dimming of headlights
How to Fix B3806 2015 Chevrolet Silverado
- Begin by conducting a thorough visual inspection of the high beam switch, wiring harness, and headlight control module to identify any visible damage or loose connections.
- Use a multimeter to test the continuity of the circuit and check for any voltage irregularities.
- Replace any damaged components such as the high beam switch, wiring harness, or headlight control module as needed.
- Clear the DTC from the vehicle's onboard computer using a diagnostic scan tool.
- Test the repaired circuit to ensure that the high beam headlights and headlamp flash function are working correctly.
Cost to Fix B3806 2015 Chevrolet Silverado
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 replacement parts. On average, the repair for this type of problem could range from $150 to $500, including parts and labor. However, it's important to note that labor rates at auto repair shops can vary, with hourly rates typically falling between $80 and $150. It's recommended to consult with a qualified mechanic or repair shop to get an accurate estimate based on your vehicle's make and model, as well as the extent of the repair needed.
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Frequently Asked Questions about B3806 2015 Chevrolet Silverado Code
1. What does the OBDII code B3806 mean on a 2015 Chevrolet Silverado?
It indicates a malfunction in the high beam and headlamp flash select circuit, suggesting an issue with the control or wiring of the high beam system.
2. What are common symptoms of code B3806 in a 2015 Chevrolet Silverado?
Common symptoms include the high beams not activating, the headlamp flash feature not functioning, or an illuminated check engine or warning light.
3. What causes the B3806 code on a 2015 Chevrolet Silverado?
Possible causes include a faulty high beam switch, damaged or corroded wiring, a blown fuse, or a malfunctioning body control module (BCM).
4. How do I diagnose the B3806 code on my Silverado?
Start by checking the high beam switch and wiring for damage or loose connections. Use a scan tool to verify the code and test the circuit components.
5. Can a blown fuse cause the B3806 code to appear?
Yes, a blown fuse in the headlamp circuit can interrupt power and trigger this code.
6. Is the body control module (BCM) likely to fail and cause the B3806 code?
While less common, a malfunctioning BCM can cause this code if it fails to properly control the high beam circuit.
7. How can I fix the B3806 code on my 2015 Chevrolet Silverado?
Repairs may include replacing a faulty high beam switch, repairing damaged wiring, replacing a blown fuse, or reprogramming or replacing the BCM.
8. How much does it cost to repair the B3806 code on a Silverado?
The cost depends on the root cause. Replacing a switch or fuse may cost $50–$150, while BCM repairs can exceed $500 including parts and labor.
9. Can I still drive my 2015 Silverado with the B3806 code?
It's possible, but not recommended as it may impair your ability to use high beams, which are crucial for safe driving at night or in low visibility.
10. Do I need professional help to fix the B3806 code?
If basic troubleshooting like inspecting fuses and wiring doesn’t resolve the issue, consulting a professional mechanic is advised to diagnose and repair the circuit.
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