AutoCodes – Chevrolet – B258A 2016 Chevrolet Silverado

B258A 2016 Chevrolet Silverado 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 Chevrolet Silverado 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.

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Code Popularity 221

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 26, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B258A 2016 Chevrolet Silverado Description

With the headlamp switch in the ON position, the headlamp switch headlamp ON signal circuit is grounded through the headlamp switch. The Body Control Module (BCM) responds by applying ground to the low beam relay control circuit which energizes the low beam relay. With the low beam relay energized, the switch contacts close allowing battery voltage to flow through the low beam fuses to the low beam control circuits illuminating the low beam headlamps. The Diagnostic Trouble Code (DTC) will be set when the BCM detects a problem in the headlamp low beam relay control circuit.

OBDII Code B258A 2016 Chevrolet Silverado - Low Beam Control Circuit - AutoCodes.com — B258A 2016 Chevrolet Silverado Code - Low Beam Control Circuit

What does this mean?

What are the Possible Causes of the DTC B258A 2016 Chevrolet Silverado?

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 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 does this mean?

Code Tech Notes

B258A:01 Low Beam Control Circuit Short to Battery
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 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.

Need more information about the B258A 2016 Chevrolet Silverado code?

Need more information on how to fix the B258A 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 B258A 2016 Chevrolet Silverado Code

1. What does OBDII code B258A mean for a 2016 Chevrolet Silverado?

Code B258A indicates an issue with the low beam control circuit, typically related to the electrical system controlling the low beam headlights.

2. What are common symptoms of code B258A in a 2016 Chevrolet Silverado?

Symptoms may include non-functioning low beam headlights, flickering lights, or a dashboard warning related to the lighting system.

3. What causes the B258A code to appear?

Common causes include a blown fuse, damaged wiring, corroded connectors, or a malfunctioning headlight control module.

4. Can a faulty headlight bulb trigger code B258A?

Yes, a burned-out or improperly installed low beam headlight bulb can cause this code to appear.

5. How can I diagnose the B258A code in my 2016 Chevrolet Silverado?

Start by visually inspecting the low beam bulbs, fuses, and wiring for damage or corrosion. Use a multimeter to test the circuit and check for continuity or voltage issues.

6. Is it safe to drive with code B258A active?

While the vehicle may still be drivable, reduced visibility due to non-functioning low beams can compromise safety, especially at night.

7. How do you fix the B258A code on a 2016 Chevrolet Silverado?

Repair may involve replacing a faulty bulb, fixing damaged wiring, cleaning corroded connectors, or replacing the headlight control module.

8. Can clearing the B258A code solve the issue permanently?

Clearing the code may work temporarily, but if the underlying issue isn't fixed, the code will likely return.

9. How much does it cost to repair the B258A code on a Silverado?

Repair costs vary depending on the issue. Replacing a bulb or fuse is inexpensive, while fixing wiring or replacing a control module can be more costly.

10. Does the B258A code affect other vehicle systems in a Silverado?

Typically, this code only affects the low beam circuit, but persistent electrical issues could potentially impact other lighting functions.