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B0805

B0805: Malfunction in Exterior Lighting Circuit

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

📖 What Does B0805 Mean?

The B0805 code indicates a problem with the exterior lighting circuit, which can cause issues with the headlight, taillight, or brake light functions.
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Symptoms

  • Dim or non-functional exterior lights
  • warning lights on the dashboard
  • difficulty seeing at night
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Common Causes

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

1. Check and replace faulty bulbs; 2. Inspect and repair wiring issues; 3. Check and replace blown fuses; 4. Test and replace the exterior lighting control module if necessary

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Common Questions About B0805

Q

Can I drive with code B0805?

A

You can drive for a short time, but should address code B0805 soon to avoid worsening the problem or failing an emissions test.

Q

How much does it cost to fix B0805?

A

The estimated repair cost for code B0805 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 B0805 can be tricky. Don't risk it if you're unsure.

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Related Diagnostic Codes

Other codes that may appear with B0805

💡 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