AutoCodes – Buick – B3824 Buick

B3824 Buick Code - Right Rear Window Relay Power Circuit

Quick Answer

Battery positive voltage is supplied to the right rear power window switch and the up and down relays through the window lockout signal circuit. Common causes include Faulty Body Control Module (BCM), Body Control Module (BCM) harness is open or shorted, Body Control Module (BCM) 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: B3824 Buick indicates Right Rear Window Relay Power Circuit.
Common causes: Common causes include Faulty Body Control Module (BCM), Body Control Module (BCM) harness is open or shorted, Body Control Module (BCM) 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 419

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Mar 17, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3824 Buick Description

Battery positive voltage is supplied to the right rear power window switch and the up and down relays through the window lockout signal circuit. If the window lockout function is disabled, the Body Control Module (BCM) supplies battery positive voltage to the switch and relays and the right window operates normally. If the window lockout function is enabled, the BCM will not supply battery positive voltage to the switch and relays and the right rear window will be inoperative unless it is operated from the driver power window switch.

OBDII Code B3824 Buick - Right Rear Window Relay Power Circuit - AutoCodes.com — B3824 Buick Code - Right Rear Window Relay Power Circuit

What does this mean?

What are the Possible Causes of the DTC B3824 Buick?

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

How to Fix the DTC B3824 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 B3824 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 B3824 Buick Code

1. What does the OBDII code B3824 mean for a Buick?

The code B3824 indicates a problem in the Right Rear Window Relay Power Circuit, which affects the operation of the right rear window.

2. What are the common symptoms of code B3824 in a Buick?

Symptoms include the right rear window not responding to switch inputs, intermittent operation, or complete failure to move up or down.

3. What causes the B3824 code to be triggered?

Common causes include a faulty relay, damaged wiring in the circuit, a malfunctioning window motor, or a problem with the body control module (BCM).

4. How do I diagnose the B3824 code on my Buick?

Start by checking the right rear window relay for proper operation, inspect the wiring and connectors for damage or corrosion, and test the window motor.

5. Can I still drive my Buick with a B3824 code?

Yes, the vehicle can still be driven safely, but the right rear window may be inoperable, which could be inconvenient or compromise ventilation.

6. How do I fix a B3824 code in my Buick?

Repairs may involve replacing a defective relay, repairing damaged wiring, cleaning corroded connectors, or replacing the window motor if it's faulty.

7. Is the B3824 code likely to be caused by a blown fuse?

It's possible if the fuse that powers the right rear window circuit is blown, so checking the fuse box should be part of the diagnosis.

8. How much does it cost to repair a B3824 code on a Buick?

The cost depends on the specific issue. Replacing a relay or repairing wiring might cost $50â€“$200, while replacing a window motor could cost $200â€“$500 or more.

9. Can a bad Body Control Module (BCM) cause the B3824 code?

Yes, a malfunctioning BCM can disrupt the power circuit for the right rear window relay, but this is less common and should be checked after other components.

10. How can I prevent the B3824 code from recurring?

Regularly inspect the window system wiring, keep connectors clean and corrosion-free, and avoid overloading the window motor by holding the switch too long.