AutoCodes – Chevrolet – B2600 2015 Chevrolet Silverado

B2600 2015 Chevrolet Silverado Code - Left Daytime Running Lamps Control Circuit

Quick Answer

The ambient light sensor is used to monitor outside lighting conditions. Common causes include Faulty Left Headlamp Assembly, Left Headlamp Assembly harness is open or shorted, Left Headlamp Assembly 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: B2600 2015 Chevrolet Silverado indicates Left Daytime Running Lamps Control Circuit.
Common causes: Common causes include Faulty Left Headlamp Assembly, Left Headlamp Assembly harness is open or shorted, Left Headlamp Assembly 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 220

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 B2600 2015 Chevrolet Silverado Description

The ambient light sensor is used to monitor outside lighting conditions. The ambient light sensor provides a voltage signal that will vary between 0.2 and 4.9 volts depending on outside lighting conditions. The Body Control Module (BCM) provides a 5-volt reference signal to the ambient light sensor and the Heating, Ventilation, and Air Conditioning (HVAC) control module provides a low reference ground. The BCM monitors the ambient light sensor signal circuit to determine if outside lighting conditions are correct for either Daytime Running Lights (DRL) or Automatic Lamp Control (ALC) when the headlamp switch is in the AUTO position. In daylight conditions, the BCM will command the DRLs ON. During low light conditions, the BCM will command the low beam headlamps ON. Any function or condition that turns on the headlamps will cancel the DRL operation. The Diagnostic Trouble Code (DTC) will be set when the BCM detects a problem in the left DRL control circuit.

OBDII Code B2600 2015 Chevrolet Silverado - Left Daytime Running Lamps Control Circuit - AutoCodes.com — B2600 2015 Chevrolet Silverado Code - Left Daytime Running Lamps Control Circuit

What does this mean?

What are the Possible Causes of the DTC B2600 2015 Chevrolet Silverado?

Faulty Left Headlamp Assembly
Left Headlamp Assembly harness is open or shorted
Left Headlamp Assembly circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B2600 2015 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

B2600:01 Left Daytime Running Lamps Control Circuit short to Battery
B2600:02 Left Daytime Running Lamps Control Circuit Short to Ground
B2600:04 Left Daytime Running Lamps Control Circuit Open

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2600 2015 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 B2600 2015 Chevrolet Silverado code?

Need more information on how to fix the B2600 2015 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 B2600 2015 Chevrolet Silverado Code

1. What does the OBDII code B2600 mean on a 2015 Chevrolet Silverado?

The B2600 code indicates an issue with the Left Daytime Running Lamps Control Circuit, meaning the system has detected a fault in the wiring, bulb, or control module for the left daytime running light.

2. What are the common symptoms of the B2600 code?

Symptoms include the left daytime running lamp not working, a dashboard warning light, or intermittent functionality of the left daytime running lamp.

3. What causes the B2600 code to appear?

Common causes include a burnt-out bulb, damaged wiring or connectors, a faulty daytime running lamp control module, or a programming issue in the body control module (BCM).

4. How can I diagnose the B2600 code in my Silverado?

Start by inspecting the left daytime running lamp bulb and its socket. Check the wiring and connectors for damage or corrosion. Use a multimeter to test for proper voltage and continuity in the circuit.

5. Can a blown fuse cause the B2600 code?

Yes, a blown fuse in the daytime running lamp circuit can cause this code. Check the vehicleâ€™s fuse box and replace any blown fuses related to the lighting system.

6. How do I fix the B2600 code on a 2015 Chevrolet Silverado?

Common repairs include replacing the left daytime running lamp bulb, repairing damaged wiring or connectors, or replacing the control module if it is determined to be faulty.

7. Can I still drive my Silverado with the B2600 code active?

Yes, you can drive with this code active, but the left daytime running lamp will not function properly, which may reduce visibility and violate vehicle lighting regulations.

8. How much does it cost to repair the B2600 code?

Repair costs vary, but replacing a bulb typically costs $20-$50, while repairing wiring or replacing a control module could range from $100 to $500 depending on parts and labor.

9. Can a software issue cause the B2600 code?

Yes, a software glitch in the body control module (BCM) can cause this code. In some cases, reprogramming or updating the BCM may be necessary.

10. Do both daytime running lamps need to be replaced if one fails?

No, you only need to replace the faulty lamp. However, replacing both lamps at the same time is recommended to maintain consistent brightness and lifespan.