AutoCodes – Generic – B2654

B2654 Code - Courtesy Lamp Low Control Circuit Low

Quick Answer

The Body Control Module (BCM) controls the Courtesy Lamps through the courtesy lamp low control circuit. Common causes include Faulty Courtesy Lamp, Courtesy Lamp harness is open or shorted, Courtesy Lamp 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: B2654 indicates Courtesy Lamp Low Control Circuit Low.
Common causes: Common causes include Faulty Courtesy Lamp, Courtesy Lamp harness is open or shorted, Courtesy Lamp 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 2,411

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 Jan 13, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2654 Description

The Body Control Module (BCM) controls the Courtesy Lamps through the courtesy lamp low control circuit. The BCM grounds the courtesy lamp low control circuit which completes the interior lamps circuit, and the lamps illuminate. The Diagnostic Trouble Code (DTC) sets when the BCM detects an output that is low when a high is expected in the courtesy lamp low control circuit.

OBDII Code B2654 - Courtesy Lamp Low Control Circuit Low - AutoCodes.com — B2654 Code - Courtesy Lamp Low Control Circuit Low

What does this mean?

What are the Possible Causes of the DTC B2654?

Faulty Courtesy Lamp
Courtesy Lamp harness is open or shorted
Courtesy Lamp circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B2654?

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 B2654 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 B2654 code?

Need more information on how to fix the B2654 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2654 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B2654 Buick — Courtesy Lamp Low Control Circuit Low
B2654 Cadillac — Courtesy Lamp Low Control Circuit Low
B2654 Chevrolet — Courtesy Lamp Low Control Circuit Low
B2654 GMC — Courtesy Lamp Low Control Circuit Low
B2654 Infiniti — D/F2 Vent Door Fail
B2654 Nissan — D/F2 Vent Door Fail

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 B2654 Code

1. What are common symptoms of OBDII code B2654 - Courtesy Lamp Low Control Circuit Low?

- Common symptoms include the courtesy lamp not working, dim or flickering interior lights, or a dashboard warning light indicating an issue.

2. What can cause OBDII code B2654 to trigger?

- The code can be triggered by issues such as a faulty courtesy lamp control module, a short or open circuit in the wiring, or a blown fuse related to the courtesy lamp circuit.

3. How can I diagnose the cause of OBDII code B2654?

- To diagnose the issue, you can start by checking the courtesy lamp fuse, inspecting the wiring for any visible damage, and testing the courtesy lamp control module for proper functionality.

4. What are some repair tips for fixing OBDII code B2654?

- Repair tips may include replacing a faulty courtesy lamp control module, repairing any damaged wiring, ensuring proper grounding, and replacing blown fuses related to the courtesy lamp circuit.

5. Can OBDII code B2654 be safely ignored?

- Ignoring the code may lead to continued issues with the interior lighting system. It is recommended to address the underlying problem to ensure proper functionality and safety.

6. Are there any safety concerns associated with OBDII code B2654?

- While the code itself does not pose an immediate safety risk, malfunctioning interior lights can affect visibility inside the vehicle, especially at night, which can impact driving safety.

7. Can I reset OBDII code B2654 on my own?

- You can clear the code using an OBDII scanner, but it is important to address the underlying issue causing the code to prevent it from reoccurring.

8. How much does it typically cost to repair OBDII code B2654?

- The cost of repair can vary depending on the cause of the issue, the extent of the damage, and whether you choose to fix it yourself or take it to a professional mechanic.

9. Is it possible to prevent OBDII code B2654 from occurring in the future?

- Regularly checking and maintaining the interior lighting system, ensuring proper wiring connections, and addressing any issues promptly can help prevent the code from reoccurring.

10. Can a DIY enthusiast fix OBDII code B2654 at home?

- Depending on your level of automotive knowledge and access to tools, you may be able to diagnose and repair the issue causing OBDII code B2654 at home. However, if in doubt, it's best to seek professional help.