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B0221

B0221: Low Beam Headlight Relay Circuit Malfunction

Fix Cost
$50 - $150
Parts & Labor
Difficulty
3/5
Moderate
1-2 hours
DIY Possible?
✅ Yes
Save money
Category
Body
System

📖 What Does B0221 Mean?

The B0221 code indicates a problem with the low beam headlight relay circuit, which controls the low beam headlights. This can cause the headlights to malfunction or not function at all.
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Symptoms

  • Headlights not turning on
  • flickering
  • or staying on continuously
  • dim or bright lights
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Common Causes

  • Faulty headlight relay
  • wiring issues
  • blown fuse
  • or a problem with the headlight switch
Fix Guide
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Possible Solutions

1. Check the headlight relay for any signs of damage or corrosion. Replace it if necessary. 2. Inspect the wiring and connections for any damage or corrosion. Repair or replace as needed. 3. Check the fuse box for a blown fuse. Replace the fuse if necessary. 4. Test the headlight switch to ensure it's functioning properly.

Common Questions About B0221

Can I drive with code B0221?

You can drive for a short time, but should address code B0221 soon to avoid worsening the problem or failing an emissions test.

How much does it cost to fix code B0221?

The estimated repair cost for code B0221 is between $50 and $150. This includes parts and labor. Prices may vary based on your vehicle's make and model.

Is code B0221 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

Multimeter Wire tester Torx screwdriver
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Need a Pro?

Complex codes like B0221 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 B0221

💡 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