B3806 2017 Chevrolet Silverado Code - High Beam and Headlamp Flash Select Circuit Malfunction
Quick Answer
When the turn signal/multifunction switch is momentarily placed in the flash-to-pass position, ground is applied to the Body Control Module (BCM) through the flash-to-pass signal circuit. Common causes include Faulty Turn Signal/Multifunction Switch, Turn Signal/Multifunction Switch harness is open or shorted, Turn Signal/Multifunction Switch circuit poor electrical connection. 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 2017 Chevrolet Silverado indicates High Beam and Headlamp Flash Select Circuit Malfunction.
- Common causes
- Common causes include Faulty Turn Signal/Multifunction Switch, Turn Signal/Multifunction Switch harness is open or shorted, Turn Signal/Multifunction Switch circuit poor electrical connection.
- 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.
Code B3806 2017 Chevrolet Silverado Description
What are the Possible Causes of the DTC B3806 2017 Chevrolet Silverado?
- Faulty Turn Signal/Multifunction Switch
- Turn Signal/Multifunction Switch harness is open or shorted
- Turn Signal/Multifunction Switch circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B3806 2017 Chevrolet Silverado?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B3806 2017 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about B3806 2017 Chevrolet Silverado Code
1. What does the OBDII code B3806 mean on a 2017 Chevrolet Silverado?
The B3806 code indicates a "High Beam and Headlamp Flash Select Circuit Malfunction," meaning there’s an issue with the circuit controlling the high beams or the headlamp flash function.
2. What are the common symptoms of the B3806 code in a 2017 Chevrolet Silverado?
The symptoms may include non-functioning high beams, inability to use the headlamp flash feature, or a dashboard warning light.
3. What causes the B3806 code to appear in a 2017 Chevrolet Silverado?
Common causes include a faulty multifunction switch, damaged wiring or connectors in the headlamp circuit, or a malfunctioning Body Control Module (BCM).
4. Can a bad high-beam bulb cause the B3806 code on a 2017 Chevrolet Silverado?
While unlikely, a shorted or damaged high-beam bulb could potentially contribute to the circuit malfunction, so it’s worth inspecting the bulbs.
5. How is the B3806 code diagnosed on a 2017 Chevrolet Silverado?
A technician will inspect the multifunction switch, check for damaged wiring or connectors, and use a scan tool to monitor the BCM for proper operation of the high-beam circuit.
6. Can I drive my 2017 Chevrolet Silverado with the B3806 code active?
Yes, but driving without functional high beams or the headlamp flash feature may reduce visibility and safety in certain conditions.
7. What repairs can fix the B3806 code in a 2017 Chevrolet Silverado?
Repairs may include replacing the multifunction switch, repairing or replacing damaged wiring, or reprogramming or replacing the BCM if necessary.
8. How much does it cost to fix the B3806 code on a 2017 Chevrolet Silverado?
Repair costs can range from $100 for a simple wiring repair to $500 or more if the BCM or multifunction switch needs replacing.
9. Can I reset the B3806 code without fixing the issue?
Clearing the code without addressing the underlying problem will likely cause the code to return, as the malfunction persists.
10. Is the B3806 code specific to the 2017 Chevrolet Silverado?
No, the B3806 code is not specific to the Silverado, but the exact causes and repairs may vary depending on the vehicle make and model.
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