B258A 2016 GMC Sierra Code - Low Beam Control Circuit
Quick Answer
With the headlamp switch in the ON position, the headlamp switch headlamp ON signal circuit is grounded through the headlamp switch. Common causes include Blown Low Beam Headlamp Fuse, Low Beam Headlamp Fuse harness is open or shorted, Low Beam Headlamp Fuse 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
- B258A 2016 GMC Sierra indicates Low Beam Control Circuit.
- Common causes
- Common causes include Blown Low Beam Headlamp Fuse, Low Beam Headlamp Fuse harness is open or shorted, Low Beam Headlamp Fuse 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 B258A 2016 GMC Sierra Description
What are the Possible Causes of the DTC B258A 2016 GMC Sierra?
- Blown Low Beam Headlamp Fuse
- Low Beam Headlamp Fuse harness is open or shorted
- Low Beam Headlamp Fuse circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B258A 2016 GMC Sierra?
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.
Code Tech Notes
B258A:02 Low Beam Control Circuit Short to Ground
B258A:04 Low Beam Control Circuit Open
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B258A 2016 GMC Sierra 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 B258A 2016 GMC Sierra Code
1. What does the OBDII code B258A mean on a 2016 GMC Sierra?
The code B258A indicates an issue with the low beam control circuit, typically related to a malfunction in the wiring, bulb, or control module.
2. What are common symptoms of the B258A code in a 2016 GMC Sierra?
Common symptoms include one or both low beam headlights not working, flickering headlights, or a warning light on the dashboard.
3. What causes the B258A code to appear on a 2016 GMC Sierra?
Possible causes include a faulty headlight bulb, damaged wiring or connectors, a defective headlight control module, or a blown fuse.
4. Can I still drive my 2016 GMC Sierra with the B258A code?
While the vehicle can still be driven, driving at night or in poor visibility conditions may be unsafe due to non-functioning low beam headlights.
5. How do I diagnose the B258A code on my 2016 GMC Sierra?
To diagnose, inspect the low beam headlight bulbs, fuses, wiring, and connectors for damage or corrosion. A scan tool can also be used to test the headlight control module.
6. How do I fix the B258A code on my 2016 GMC Sierra?
Repairs may involve replacing a faulty bulb, repairing or replacing damaged wiring or connectors, or replacing the headlight control module if it’s defective.
7. Can a blown fuse trigger the B258A code on a 2016 GMC Sierra?
Yes, a blown fuse in the low beam circuit can cause the code to appear by disrupting the electrical flow to the headlights.
8. How much does it cost to fix the B258A code on a 2016 GMC Sierra?
Repair costs vary depending on the issue, ranging from $10–$30 for a new bulb or fuse to $200–$400 if the headlight control module needs replacement.
9. Will resetting the code clear the B258A issue on a 2016 GMC Sierra?
Resetting the code may temporarily clear it, but the underlying problem must be fixed to prevent the code from returning.
10. Can a faulty headlight bulb trigger the B258A code on a 2016 GMC Sierra?
Yes, if the low beam headlight bulb is burned out or malfunctioning, it can trigger the B258A code.
Discuss the causes and fixes for B258A 2016 GMC Sierra OBDII Code
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