AutoCodes – Buick – B3823 Buick

B3823 Buick Code - Right Rear Window Down Control Circuit

Quick Answer

The Body Control Module (BCM) grounds the control side of the right rear power window down relay upon receiving a class 2 message from the Driver Door Module (DDM). Common causes include Faulty Right Rear Power Window Switch, Right Rear Power Window Switch harness is open or shorted, Right Rear Power Window Switch 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: B3823 Buick indicates Right Rear Window Down Control Circuit.
Common causes: Common causes include Faulty Right Rear Power Window Switch, Right Rear Power Window Switch harness is open or shorted, Right Rear Power Window Switch 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 644

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 Mar 17, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3823 Buick Description

The Body Control Module (BCM) grounds the control side of the right rear power window down relay upon receiving a class 2 message from the Driver Door Module (DDM). The Diagnostic Trouble Code (DTC) sets when the BCM has grounded the right rear power window down relay control circuit and the control circuit is shorted to battery positive voltage.

OBDII Code B3823 Buick - Right Rear Window Down Control Circuit - AutoCodes.com — B3823 Buick Code - Right Rear Window Down Control Circuit

What does this mean?

What are the Possible Causes of the DTC B3823 Buick?

Faulty Right Rear Power Window Switch
Right Rear Power Window Switch harness is open or shorted
Right Rear Power Window Switch circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B3823 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 B3823 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.

Need more information about the B3823 Buick code?

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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 B3823 Buick Code

1. What does the OBDII code B3823 mean in a Buick?

The code B3823 indicates a malfunction in the right rear window down control circuit, which affects the operation of the right rear window.

2. What are the common symptoms of the B3823 code?

Common symptoms include the right rear window not lowering, erratic window operation, or no response when using the window switch.

3. What causes the B3823 code to appear?

Possible causes include a faulty window switch, damaged wiring or connectors in the circuit, or a malfunctioning window motor.

4. Can I still drive my Buick with the B3823 code active?

Yes, this code does not affect the drivability of your vehicle, but it may limit the functionality of the right rear window.

5. How do I diagnose the B3823 code?

Start by checking the window switch, wiring, and connectors for damage or loose connections. Use a multimeter to test the circuit and window motor for proper operation.

6. Can a blown fuse cause the B3823 code?

Yes, a blown fuse in the power window circuit can cause this code by interrupting the electrical flow to the window motor.

7. How do I fix the B3823 code in my Buick?

Repairs may include replacing a faulty window switch, repairing damaged wiring, or replacing the window motor if it has failed.

8. How much does it cost to repair the B3823 code?

Repair costs vary but may range from $50 to $250, depending on whether the issue is with the switch, wiring, or motor.

9. Can I clear the B3823 code without fixing the issue?

Clearing the code without addressing the underlying issue may temporarily remove it, but the code will likely return.

10. Do I need a professional to fix the B3823 code?

If you're comfortable with basic electrical diagnostics and repairs, you can attempt to fix it yourself. Otherwise, a professional mechanic can ensure proper diagnosis and repair.