AutoCodes – Chevrolet – B2600 Chevrolet

B2600 Chevrolet 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 Chevrolet 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 9,887

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

What does this mean?

What are the Possible Causes of the DTC B2600 Chevrolet?

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 Chevrolet?

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 Chevrolet 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 Chevrolet code?

Need more information on how to fix the B2600 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

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Information for Specific Chevrolet Models

B2600 2014 Chevrolet Silverado — Left Daytime Running Lamps Control Circuit
B2600 2015 Chevrolet Silverado — Left Daytime Running Lamps Control Circuit
B2600 2016 Chevrolet Silverado — Left Daytime Running Lamps Control Circuit
B2600 2017 Chevrolet Silverado — Left Daytime Running Lamps Control Circuit
B2600 2018 Chevrolet Silverado — Left Daytime Running Lamps Control Circuit

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 Chevrolet Code

1. What are the common symptoms of OBDII code B2600 for the Left Daytime Running Lamps Control Circuit in a Chevrolet vehicle?

- Common symptoms include the left daytime running lamp not working, flickering, or staying on constantly.

2. What are the possible causes of OBDII code B2600 in a Chevrolet, related to the Left Daytime Running Lamps Control Circuit?

- Possible causes include a faulty daytime running lamp control module, wiring issues, a damaged bulb, or a malfunctioning light switch.

3. How can I diagnose the OBDII code B2600 for the Left Daytime Running Lamps Control Circuit in my Chevrolet?

- Diagnose the code by inspecting the left daytime running lamp for physical damage, checking the wiring harness for any issues, testing the control module, and verifying the operation of the light switch.

4. Can I still drive my Chevrolet if OBDII code B2600 is present for the Left Daytime Running Lamps Control Circuit?

- It is generally safe to drive your vehicle with this code, but it is recommended to address the issue promptly to ensure proper visibility and adherence to road safety regulations.

5. How do I repair OBDII code B2600 for the Left Daytime Running Lamps Control Circuit in my Chevrolet?

- Repair options may include replacing the faulty daytime running lamp control module, repairing any damaged wiring, replacing a defective bulb, or addressing issues with the light switch.

6. Are there any DIY tips I can follow to troubleshoot OBDII code B2600 in my Chevrolet for the Left Daytime Running Lamps Control Circuit?

- You can start by checking the fuse related to the daytime running lamps, inspecting the connections and wiring for any visible damage, and ensuring that the bulbs are in good working condition.

7. What are the consequences of ignoring OBDII code B2600 for the Left Daytime Running Lamps Control Circuit in a Chevrolet?

- Ignoring this code may result in reduced visibility during daytime driving, potential safety hazards, and possible citations for non-compliance with road regulations regarding lighting.

8. How much does it typically cost to repair OBDII code B2600 in a Chevrolet for the Left Daytime Running Lamps Control Circuit?

- Repair costs can vary depending on the specific issue causing the code, but expenses may include parts and labor ranging from $100 to $300 or more, depending on the extent of repairs needed.

9. Can weather conditions or environmental factors contribute to triggering OBDII code B2600 for the Left Daytime Running Lamps Control Circuit in a Chevrolet?

- Yes, extreme weather conditions, moisture, or exposure to environmental elements can potentially cause issues with the daytime running lamp circuit, leading to the triggering of this code.

10. Is it possible for OBDII code B2600 in a Chevrolet related to the Left Daytime Running Lamps Control Circuit to reset on its own?

- In some cases, the code may reset if the underlying issue is temporary or intermittent. However, it is advisable to diagnose and address the root cause to prevent future occurrences.