← Back to Search Severity: Medium

B0387

B0387: Power Window Regulator Malfunction

Fix Cost
$50 - $200
Parts & Labor
Difficulty
3/5
Moderate
1-2 hours
DIY Possible?
✅ Yes
Save money
Category
Body
System

📖 What Does B0387 Mean?

The B0387 code indicates a problem with the power window regulator, which controls the movement of the window glass. This code is often accompanied by symptoms such as slow or stuck windows, or windows that do not move at all.
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Symptoms

  • Slow or stuck windows
  • windows that do not move at all
  • unusual noises when operating the windows
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Common Causes

  • Faulty power window regulator
  • faulty window motor
  • faulty wiring or electrical connections
  • faulty window switch
Fix Guide
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Possible Solutions

1. Disconnect the battery to prevent any accidental window movement. 2. Remove the door panel to access the power window regulator. 3. Disconnect the electrical connector from the regulator. 4. Remove the regulator from the door. 5. Inspect the regulator for any signs of wear or damage. 6. Replace the regulator if damaged. 7. Reassemble the regulator in the reverse order of disassembly. 8. Reconnect the electrical connector to the regulator. 9. Reconnect the battery and test the windows.

Common Questions About B0387

Can I drive with code B0387?

You can drive for a short time, but should address code B0387 soon to avoid worsening the problem or failing an emissions test.

How much does it cost to fix code B0387?

The estimated repair cost for code B0387 is between $50 and $200. This includes parts and labor. Prices may vary based on your vehicle's make and model.

Is code B0387 easy to fix myself?

This repair is considered moderate. It may require specialized tools or significant disassembly. If you are not an experienced mechanic, professional help is recommended.

Required Parts

Tools

screwdriver torx driver wrench
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Need a Pro?

Complex codes like B0387 can be tricky. Don't risk it if you're unsure.

Quick Stats

Severity Medium
DIY Friendly Yes
Est. Time 1-2 hours
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Related Diagnostic Codes

Other codes that may appear with B0387

💡 Why These Codes Are Related:

  • Similar Issues: Same root cause or component failure
  • Related Problems: Often occur together due to system interactions
  • Sequential Codes: Progressive failure stages or multiple sensors
  • Same System: Components within the same automotive system