AutoCodes – GMC – B2654 GMC

B2654 GMC 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 GMC 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 1,838

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

What does this mean?

What are the Possible Causes of the DTC B2654 GMC?

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 GMC?

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 GMC 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 GMC Code

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

- Common symptoms include the courtesy lamps not turning on or staying dim, even when the doors are opened.

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

- Possible causes may include a faulty courtesy lamp switch, wiring issues, or a malfunctioning body control module.

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

- To diagnose the issue, you can start by inspecting the courtesy lamp switch, checking the wiring for any damage, and using a scan tool to read the body control module codes.

4. Can a DIYer repair OBDII code B2654 GMC?

- Depending on your level of experience, repairing this code may involve replacing the faulty courtesy lamp switch, repairing damaged wiring, or reprogramming the body control module.

5. Is it safe to continue driving with OBDII code B2654 GMC present?

- While the issue may not affect the drivability of the vehicle, it is recommended to address the problem to ensure the proper functioning of the courtesy lamps and potentially prevent other electrical issues.

6. How much does it typically cost to repair OBDII code B2654 GMC at a mechanic or dealership?

- Repair costs can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

7. Are there any preventive measures to avoid OBDII code B2654 GMC in the future?

- Regularly inspecting the courtesy lamps, switches, and wiring for any signs of wear or damage can help prevent the recurrence of this code.

8. Will resetting the OBDII codes clear B2654 GMC permanently?

- Resetting the codes may temporarily clear the error, but if the underlying issue is not addressed, the code is likely to reappear upon further diagnostics.

9. Can extreme weather conditions affect the likelihood of encountering OBDII code B2654 GMC?

- Extreme temperature fluctuations or moisture exposure can potentially impact the electrical components related to the courtesy lamp system, leading to the triggering of this code.

10. How long does it typically take to repair OBDII code B2654 GMC?

- The repair time can vary depending on the exact cause of the issue and the availability of parts, but it may take anywhere from 1 to 3 hours for a skilled technician to diagnose and fix the problem.