AutoCodes – Generic – B3287

B3287 Code - Left Rear Window Express Up or Down Circuit Low

Quick Answer

This Diagnostic Trouble Code (DTC) is generated by a passenger door window switch or a passenger door window switch circuit. Common causes include Faulty Left Rear Window Switch, Left Rear Window Switch harness is open or shorted, Left Rear 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: B3287 indicates Left Rear Window Express Up or Down Circuit Low.
Common causes: Common causes include Faulty Left Rear Window Switch, Left Rear Window Switch harness is open or shorted, Left Rear 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 645

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 06, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B3287 Description

This Diagnostic Trouble Code (DTC) is generated by a passenger door window switch or a passenger door window switch circuit. Each passenger door window switch is mounted to the trim panel of the appropriate passenger door. The circuits and contacts of each passenger door window switch receive battery voltage and ground from the corresponding door module, i.e. Front Passenger Door Module (PDM), Left Rear Door Module (LRDM), or Right Rear Door Module (RRDM). When a passenger door window switch is operated, the switch contacts close and the associated door module interprets the flow of voltage as a specific request to move the window up or down. If conditions are correct for window operation to occur, the door module then powers the associated window motor and circuits to move the window.

OBDII Code B3287 - Left Rear Window Express Up or Down Circuit Low - AutoCodes.com — B3287 Code - Left Rear Window Express Up or Down Circuit Low

What does this mean?

What are the Possible Causes of the DTC B3287?

Faulty Left Rear Window Switch
Left Rear Window Switch harness is open or shorted
Left Rear Window Switch circuit poor electrical connection
Faulty Left Rear Door Module (LRDM)

How to Fix the DTC B3287?

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 B3287 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 B3287 code?

Need more information on how to fix the B3287 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B3287 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B3287 Buick — Left Rear Window Express Up or Down Circuit Low
B3287 Cadillac — Left Rear Window Express Up or Down Circuit Low
B3287 Chevrolet — Left Rear Window Express Up or Down Circuit Low
B3287 GMC — Left Rear Window Express Up or Down Circuit Low

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 B3287 Code

1. What are the common symptoms of OBDII code B3287?

The common symptoms of OBDII code B3287 include the left rear window being unable to operate in the express up or down mode, or the window not responding at all.

2. What can cause the OBDII code B3287 to trigger?

The OBDII code B3287, indicating a Left Rear Window Express Up or Down Circuit Low, can be triggered by issues such as a faulty window switch, damaged wiring, or a malfunctioning window motor.

3. How can I troubleshoot the OBDII code B3287 on my own?

To troubleshoot the OBDII code B3287, you can start by checking the window switch for proper functionality, inspecting the wiring for any damage, and testing the window motor for proper operation.

4. Can a blown fuse cause the OBDII code B3287 to appear?

Yes, a blown fuse related to the left rear window circuit can cause the OBDII code B3287 to appear. Checking and replacing any blown fuses should be part of the diagnostic process.

5. Is it safe to continue driving with the OBDII code B3287 present?

It is generally safe to continue driving with the OBDII code B3287 related to the left rear window circuit. However, it is recommended to address the issue promptly to ensure proper functionality of the window.

6. Are there any quick fixes for the OBDII code B3287?

Quick fixes for the OBDII code B3287 may include checking and resetting the window switch, ensuring all connections are secure, and replacing any blown fuses. If the issue persists, further diagnostics may be necessary.

7. Can weather conditions affect the triggering of OBDII code B3287?

Extreme weather conditions, such as heavy rain or extreme cold, can potentially impact the triggering of OBDII code B3287 by causing electrical components to malfunction. Inspecting the window circuit during such conditions may help identify the issue.

8. How much does it typically cost to repair OBDII code B3287?

The cost of repairing OBDII code B3287 can vary depending on the root cause of the issue. It may range from a simple fuse replacement costing a few dollars to more complex repairs involving window motor or wiring replacement, which can cost several hundred dollars.

9. Can resetting the vehicle's computer clear the OBDII code B3287?

Resetting the vehicle's computer may temporarily clear the OBDII code B3287, but if the underlying issue causing the code is not addressed, it is likely to reappear. It is recommended to diagnose and fix the root cause of the problem.

10. Is professional help necessary to fix the OBDII code B3287?

While some basic troubleshooting can be done by DIY enthusiasts, professional help may be necessary to accurately diagnose and repair the OBDII code B3287, especially if it involves complex electrical components or wiring issues.