← Back to Search Severity: Medium

B0491

B0491: Power Window Circuit Malfunction

Fix Cost
$100 - $500
Parts & Labor
Difficulty
3/5
Moderate
1-2 hours
DIY Possible?
✅ Yes
Save money
Category
Body
System

📖 What Does B0491 Mean?

The B0491 code indicates a problem with the power window circuit, which can cause windows to malfunction or not function at all.
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Symptoms

  • Windows not moving
  • stuck or slow to move
  • intermittent window operation
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Common Causes

  • Faulty window regulator
  • damaged or worn-out window motor
  • faulty window switch
  • wiring issue
Fix Guide
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Possible Solutions

1. Check window switch for proper operation and clean or replace if necessary. 2. Inspect window regulator for damage or wear and replace if necessary. 3. Test window motor for proper operation and replace if necessary. 4. Check wiring for damage or corrosion and repair or replace if necessary.

Common Questions About B0491

Can I drive with code B0491?

You can drive for a short time, but should address code B0491 soon to avoid worsening the problem or failing an emissions test.

How much does it cost to fix code B0491?

The estimated repair cost for code B0491 is between $100 and $500. This includes parts and labor. Prices may vary based on your vehicle's make and model.

Is code B0491 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.

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Need a Pro?

Complex codes like B0491 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 B0491

💡 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