AutoCodes – Chevrolet – B2605 2016 Chevrolet Silverado

B2605 2016 Chevrolet Silverado Code - Right Daytime Running Lamps Control Circuit

Quick Answer

The ambient light sensor is used to monitor outside lighting conditions. Common causes include Faulty Right Headlamp Assembly, Right Headlamp Assembly harness is open or shorted, Right 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: B2605 2016 Chevrolet Silverado indicates Right Daytime Running Lamps Control Circuit.
Common causes: Common causes include Faulty Right Headlamp Assembly, Right Headlamp Assembly harness is open or shorted, Right 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 190

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 B2605 2016 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 B2605 2016 Chevrolet Silverado - Right Daytime Running Lamps Control Circuit - AutoCodes.com — B2605 2016 Chevrolet Silverado Code - Right Daytime Running Lamps Control Circuit

What does this mean?

What are the Possible Causes of the DTC B2605 2016 Chevrolet Silverado?

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

How to Fix the DTC B2605 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

B2605:01 Right Daytime Running Lamps Control Circuit short to Battery
B2605:02 Right Daytime Running Lamps Control Circuit Short to Ground
B2605:04 Right Daytime Running Lamps Control Circuit Open

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2605 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 B2605 2016 Chevrolet Silverado code?

Need more information on how to fix the B2605 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 B2605 2016 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code B2605 in a 2016 Chevrolet Silverado related to the Right Daytime Running Lamps Control Circuit?

The common symptoms include the right daytime running lamp not working, flickering, or staying on constantly.

2. What are the possible causes of OBDII code B2605 in a 2016 Chevrolet Silverado?

Possible causes include a faulty daytime running lamp module, wiring issues, blown fuse, or a defective light bulb.

3. How can I diagnose the Right Daytime Running Lamps Control Circuit issue in my 2016 Chevrolet Silverado?

You can diagnose the issue by visually inspecting the right daytime running lamp, checking the wiring for any damage, testing the fuses, and using an OBDII scanner to read the trouble code.

4. Can I still drive my 2016 Chevrolet Silverado with OBDII code B2605 triggered?

It is generally safe to drive the vehicle with this code, but it is advisable to fix the issue promptly to ensure proper functioning of the daytime running lamps for safety reasons.

5. How can I repair OBDII code B2605 in my 2016 Chevrolet Silverado?

The repair process may involve replacing the faulty daytime running lamp module, repairing any damaged wiring, replacing blown fuses, or installing a new light bulb as needed.

6. Is it possible to reset the OBDII code B2605 in a 2016 Chevrolet Silverado without fixing the underlying issue?

While you can clear the trouble code with an OBDII scanner, it is recommended to address the root cause of the problem to prevent the code from reappearing.

7. Are there any DIY tips for troubleshooting OBDII code B2605 in a 2016 Chevrolet Silverado?

DIY tips include checking the connections and wiring related to the right daytime running lamp, inspecting the fuse box for any blown fuses, and ensuring the bulb is properly seated and functioning.

8. How much does it typically cost to repair OBDII code B2605 in a 2016 Chevrolet Silverado at a professional mechanic or dealership?

The cost of repair can vary depending on the specific cause of the issue, but it may range from $100 to $300, including parts and labor.

9. Can extreme weather conditions or rough terrain contribute to triggering OBDII code B2605 in a 2016 Chevrolet Silverado?

Yes, extreme weather conditions or rough terrain can potentially cause damage to the wiring, connections, or components related to the right daytime running lamp, leading to the triggering of this trouble code.

10. How can I prevent OBDII code B2605 from occurring in my 2016 Chevrolet Silverado in the future?

Regularly inspecting and maintaining the daytime running lamps, wiring, and related components, as well as driving cautiously to minimize potential damage, can help prevent the recurrence of this trouble code.