AutoCodes – Buick – B2654 Buick

B2654 Buick 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 Buick 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 536

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

What does this mean?

What are the Possible Causes of the DTC B2654 Buick?

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 Buick?

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 Buick 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.

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Need Help with the 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 B2654 Buick Code

1. What are the common symptoms of OBDII code B2654 Buick (Courtesy Lamp Low Control Circuit Low)?

The common symptoms include dim or non-functional courtesy lamps inside the vehicle, especially when the doors are opened.

2. What are the possible causes of OBDII code B2654 Buick?

Possible causes of this code include a faulty courtesy lamp control module, damaged wiring or connectors in the courtesy lamp circuit, or a defective door ajar switch.

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

Diagnosing the code involves inspecting the courtesy lamp wiring, connectors, and control module for any visible damage or corrosion. Testing the door ajar switch and checking for proper power supply to the circuit are also essential steps.

4. Can a DIY enthusiast repair OBDII code B2654 Buick?

Depending on the specific cause, some repairs related to this code, such as replacing a faulty door ajar switch or repairing damaged wiring, can be attempted by DIY enthusiasts with the necessary tools and knowledge.

5. Is it safe to continue driving with OBDII code B2654 Buick illuminated?

While the vehicle may still be drivable with this code, it is recommended to address the issue promptly to ensure the proper functioning of the courtesy lamps and to prevent potential electrical issues in the vehicle.

6. How much does it typically cost to repair OBDII code B2654 Buick at a professional auto repair shop?

The cost of repairing this code can vary depending on the exact cause, labor rates, and parts needed. It is advisable to obtain quotes from reputable auto repair shops to get an accurate estimate.

7. Can resetting the OBDII system clear the B2654 Buick code?

Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing the code is not addressed, it is likely to reappear. It is best to diagnose and repair the root cause of the problem.

8. Are there any preventative maintenance tips to avoid OBDII code B2654 Buick in the future?

Regularly checking the functionality of the courtesy lamps, inspecting wiring for damage, and addressing any electrical issues promptly can help prevent the recurrence of this OBDII code.

9. How long does it typically take to repair OBDII code B2654 Buick?

The repair time for this code can vary depending on the cause and complexity of the issue. Simple repairs may take a few hours, while more involved diagnostics and fixes could take longer.

10. Can OBDII code B2654 Buick affect other electrical systems in the vehicle?

While this code specifically relates to the courtesy lamp control circuit, electrical issues in one part of the vehicle can sometimes have broader implications. It is essential to address this code promptly to prevent potential impacts on other electrical systems.