← Back to Search Severity: Medium

B0445

B0445: Body Control Module (BCM) Malfunction - Lighting

Fix Cost
$50 - $200
Parts & Labor
Difficulty
3/5
Moderate
1-2 hours
DIY Possible?
❌ No
Pro recommended
Category
Body
System

📖 What Does B0445 Mean?

The Body Control Module (BCM) has detected a malfunction in the lighting system, which may cause issues with the vehicle's exterior lights, such as brake lights, turn signals, or hazard lights.
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Symptoms

  • • Inoperative or flickering exterior lights
  • • warning lights on the dashboard
  • • or a check engine light.
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Common Causes

  • • Faulty BCM
  • • wiring issues
  • • blown fuses
  • • or a malfunctioning lighting module.
Fix Guide
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Possible Solutions

1. Check the BCM fuse and replace it if blown. 2. Inspect and repair any damaged wiring. 3. Test the lighting module and replace it if faulty. 4. Update the BCM software if necessary.

❓ Common Questions About B0445

Can I drive with code B0445?

You can drive for a short time, but should address code B0445 soon to avoid worsening the problem or failing an emissions test.

How much does it cost to fix code B0445?

The estimated repair cost for code B0445 is between $50 and $200. This includes parts and labor. Prices may vary based on your vehicle's make and model.

Is code B0445 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 soldering iron
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Need a Pro?

Complex codes like B0445 can be tricky. Don't risk it if you're unsure.

Quick Stats

Severity Medium
DIY Friendly No
Est. Time 1-2 hours
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Related Diagnostic Codes

Other codes that may appear with B0445

B0443 Sequential Code

B0443: Power Window Circuit Malfunction

Medium
B0444 Sequential Code

B0444: Seat Switch Circuit Malfunction

Medium
B0446 Sequential Code

B0446: Body System Security Malfunction

Medium
B0447 Sequential Code

B0447: Audio System Malfunction

Medium

💡 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