AutoCodes – Buick – B255D Buick

B255D Buick Code - Passenger Compartment Lamp Control Circuit

Quick Answer

The Body Control Module (BCM) supplies battery voltage to accent lighting lamps via the accent lamp 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: B255D Buick indicates Passenger Compartment Lamp Control Circuit.
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 914

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 May 25, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B255D Buick Description

The Body Control Module (BCM) supplies battery voltage to accent lighting lamps via the accent lamp control circuit. When a door is opened the BCM applies battery voltage to the accent lamp control circuit illuminating all of the accent lighting. The accent lighting will remain illuminated until all doors are closed, and the ignition is OFF. The accent lighting remains illuminated with the ignition ON. The Diagnostic Trouble Code (DTC) will be set when the BCM detects a problem in the courtesy lamps control circuit terminal.

OBDII Code B255D Buick - Passenger Compartment Lamp Control Circuit - AutoCodes.com — B255D Buick Code - Passenger Compartment Lamp Control Circuit

What does this mean?

What are the Possible Causes of the DTC B255D 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 B255D 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 does this mean?

Code Tech Notes

B255D:01 Passenger Compartment Lamp Control Circuit Short to Battery
B255D:02 Passenger Compartment Lamp Control Circuit Short to Ground
B255D:04 Passenger Compartment Lamp Control Circuit Open

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B255D 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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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 B255D Buick Code

1. What does the OBDII code B255D mean for a Buick?

B255D indicates a problem with the passenger compartment lamp control circuit, which manages the interior lighting functionality.

2. What are the common symptoms of the B255D code?

Symptoms may include interior lights not turning on or off, flickering interior lights, or lights staying on longer than expected.

3. What causes the B255D code to appear?

The code can be triggered by a faulty lamp control module, damaged wiring or connectors, or a malfunctioning switch in the lighting circuit.

4. How can I diagnose the B255D code in my Buick?

Start by checking the wiring and connectors for damage or corrosion, inspecting the lamp control module, and testing the switches in the lighting system.

5. Can I fix the B255D code myself?

If the issue is minor, like a loose connector or corroded wire, you may be able to fix it yourself. For more complex issues, such as a failed lamp control module, professional assistance may be required.

6. Is it safe to drive with the B255D code active?

Yes, it is generally safe to drive, but the interior lighting system may not function properly, which could be inconvenient or distracting.

7. How much does it cost to repair the B255D code on a Buick?

Repair costs can vary. Replacing a lamp control module may cost $100-$300, while fixing damaged wiring could cost less if it's a simple repair.

8. What tools are needed to troubleshoot the B255D code?

Basic tools like a multimeter for testing electrical continuity and an OBDII scanner to read and clear codes are typically required.

9. Can a dead battery cause the B255D code?

A dead or weak battery is unlikely to directly cause this code, but voltage fluctuations could potentially lead to circuit-related issues.

10. How do I prevent the B255D code from recurring?

Regularly inspect and maintain the wiring, connectors, and lamp control module, and address any electrical issues promptly to prevent recurring problems.