AutoCodes – Chevrolet – B2665 Chevrolet

B2665 Chevrolet Code - Park Lamp Switch Circuit High

Quick Answer

The headlamp switch provides a ground input into the Body Control Module (BCM) for the park lamp switch input when the switch is activated. Common causes include Faulty Headlamp Switch, Headlamp Switch harness is open or shorted, Headlamp Switch 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
B2665 Chevrolet indicates Park Lamp Switch Circuit High.
Common causes
Common causes include Faulty Headlamp Switch, Headlamp Switch harness is open or shorted, Headlamp Switch 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 848
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jan 13, 2020
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Code B2665 Chevrolet Description

The headlamp switch provides a ground input into the Body Control Module (BCM) for the park lamp switch input when the switch is activated. This input is used by the BCM to control the park lamps. The Diagnostic Trouble Code (DTC) sets when the BCM detects a short to battery or open in the park lamp circuit when the Headlamp Switch is in the PARK position.
OBDII Code B2665 Chevrolet - Park Lamp Switch Circuit High - AutoCodes.com
B2665 Chevrolet Code - Park Lamp Switch Circuit High

What are the Possible Causes of the DTC B2665 Chevrolet?

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

How to Fix the DTC B2665 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2665 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 B2665 Chevrolet code?

Need more information on how to fix the B2665 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2665 Chevrolet code diagnosed by a professional: Find a repair shop in your area

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 B2665 Chevrolet Code

1. What are the common symptoms of OBDII code B2665 in a Chevrolet related to the Park Lamp Switch Circuit High?

- The common symptoms include the park lamps staying on continuously, even when the vehicle is turned off, and possible issues with the exterior lighting system.

2. What could be causing the OBDII code B2665 in a Chevrolet indicating a Park Lamp Switch Circuit High?

- The code B2665 usually indicates a fault in the park lamp switch circuit, which could be caused by a faulty park lamp switch, wiring issues, or a malfunction in the lighting control module.

3. How can I diagnose the OBDII code B2665 in a Chevrolet for the Park Lamp Switch Circuit High?

- To diagnose the issue, you can start by checking the park lamp switch for proper operation, inspecting the wiring for any damage or loose connections, and testing the lighting control module for faults.

4. What are the repair options for fixing the OBDII code B2665 related to the Park Lamp Switch Circuit High in a Chevrolet?

- Repair options may include replacing the faulty park lamp switch, repairing damaged wiring, or reprogramming/resetting the lighting control module as needed to resolve the circuit high issue.

5. Can the OBDII code B2665 in a Chevrolet indicating a Park Lamp Switch Circuit High be reset without repairing the issue?

- While you can clear the code temporarily, it is recommended to diagnose and repair the underlying issue causing the circuit high to prevent further problems with the park lamp system.

6. Are there any safety concerns associated with the OBDII code B2665 related to the Park Lamp Switch Circuit High in a Chevrolet?

- Continuous illumination of the park lamps due to this issue can drain the vehicle's battery and potentially cause visibility problems for other drivers, so it is important to address the problem promptly.

7. Is it possible to prevent the OBDII code B2665 for the Park Lamp Switch Circuit High in a Chevrolet from occurring?

- Regularly inspecting the exterior lighting system, including the park lamp switch and wiring, for any signs of wear or damage can help prevent issues that may trigger the B2665 code.

8. Can a DIY enthusiast with basic automotive knowledge repair the OBDII code B2665 in a Chevrolet related to the Park Lamp Switch Circuit High?

- Depending on the root cause, some DIYers may be able to diagnose and repair the issue themselves by following repair guides and utilizing basic tools, but complex electrical problems may require professional assistance.

9. How long does it typically take to repair the OBDII code B2665 for the Park Lamp Switch Circuit High in a Chevrolet?

- The repair time can vary based on the exact cause of the issue, but resolving the B2665 code related to the park lamp switch circuit high usually takes a few hours to a day, depending on the complexity of the repair.

10. Can the OBDII code B2665 in a Chevrolet indicating a Park Lamp Switch Circuit High affect the vehicle's overall performance?

- While the B2665 code itself may not directly impact the vehicle's performance, addressing the issue promptly is crucial to ensure the proper functioning of the exterior lighting system and prevent potential safety hazards on the road.

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