AutoCodes – Chevrolet – B2605 2015 Chevrolet Silverado

B2605 2015 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 2015 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 153
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 26, 2023
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Code B2605 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 B2605 2015 Chevrolet Silverado - Right Daytime Running Lamps Control Circuit - AutoCodes.com
B2605 2015 Chevrolet Silverado Code - Right Daytime Running Lamps Control Circuit

What are the Possible Causes of the DTC B2605 2015 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 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2605 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 B2605 2015 Chevrolet Silverado code?

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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 2015 Chevrolet Silverado Code

What does the OBDII code B2605 mean for a 2015 Chevrolet Silverado?

The code B2605 indicates a problem with the right daytime running lamps control circuit, typically involving wiring, connectors, or the lamp itself.

What are the common symptoms associated with the B2605 code?

Symptoms include the right daytime running lamp not functioning, a dashboard warning light, or intermittent operation of the lamp.

What causes the B2605 code on a 2015 Chevrolet Silverado?

Common causes include a faulty daytime running lamp, damaged wiring or connectors, corrosion, or a malfunctioning body control module (BCM).

How can I diagnose the B2605 code?

Start by inspecting the right daytime running lamp, its wiring, and connectors for damage or corrosion. Use a multimeter to test for continuity and voltage in the circuit.

Can the B2605 code cause other electrical issues?

In some cases, if the wiring or connectors are damaged, it can lead to additional electrical problems or interfere with other lighting functions.

How do I fix the B2605 code?

Repair or replace damaged wiring, connectors, or the right daytime running lamp. If the issue persists, consider checking the body control module for faults.

Do I need to replace the daytime running lamp to fix the B2605 code?

Not always. Inspect the lamp and its connections first. If the lamp is functioning properly, the issue may be related to the wiring or control circuit.

Is it safe to drive with the B2605 code active?

Yes, but the right daytime running lamp may not work, potentially reducing visibility to other drivers during daytime conditions.

Can the B2605 code be cleared without repairs?

You can clear the code with an OBDII scanner, but if the underlying issue isn't resolved, the code will likely return.

Should I take my Silverado to a mechanic for the B2605 code?

If you're unable to diagnose or repair the issue yourself, it's best to have a qualified mechanic inspect and resolve the problem.

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