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B0773

B0773: Exterior Lighting Malfunction

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

📖 What Does B0773 Mean?

The B0773 code indicates a problem with the exterior lighting system, such as the headlights, taillights, or turn signals. This code is usually set when the vehicle's computer detects a malfunction in the lighting circuit.
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Symptoms

  • Dim or inoperative exterior lights
  • warning lights on the dashboard
  • or unusual behavior of the lighting system.
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Common Causes

  • Faulty headlight or taillight bulbs
  • blown fuses
  • wiring issues
  • or a malfunctioning lighting control module.
Fix Guide
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Possible Solutions

1. Check the exterior lights and replace any blown bulbs. 2. Check the fuses and replace any blown ones. 3. Inspect the wiring and connections for damage or corrosion. 4. Test the lighting control module and replace it if faulty.

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Common Questions About B0773

Q

Can I drive with code B0773?

A

You can drive for a short time, but should address code B0773 soon to avoid worsening the problem or failing an emissions test.

Q

How much does it cost to fix B0773?

A

The estimated repair cost for code B0773 is between $50 and $200. This includes parts and labor for most makes and models.

Q

Is this code easy to fix myself?

A

This repair is considered moderate. It may require specialized tools or significant disassembly. Professional help is recommended if you aren't an experienced DIYer.

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Need a Pro?

Complex codes like B0773 can be tricky. Don't risk it if you're unsure.

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Related Diagnostic Codes

Other codes that may appear with B0773

💡 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