← Back to Search Severity: Medium

B0373

B0373: Illumination Control Module (ICM) Malfunction

Fix Cost
$100 - $300
Parts & Labor
Difficulty
3/5
Moderate
1-2 hours
DIY Possible?
❌ No
Pro recommended
Category
Body
System

📖 What Does B0373 Mean?

The illumination control module (ICM) has detected a malfunction in the lighting system, which may be causing issues with the dashboard lights, brake lights, or turn signals.
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Symptoms

  • Dim or inoperative dashboard lights
  • brake lights
  • or turn signals
  • unusual lighting patterns
  • or warning lights on the dashboard.
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Common Causes

  • Faulty ICM
  • wiring issues
  • blown fuses
  • or damaged lighting components.
Fix Guide
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Possible Solutions

1. Check the ICM for any signs of physical damage or corrosion. 2. Inspect the wiring and connectors for any signs of damage or corrosion. 3. Check the fuses and replace any blown ones. 4. Test the lighting components to ensure they are functioning properly. 5. If the issue persists, replace the ICM.

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Common Questions About B0373

Q

Can I drive with code B0373?

A

You can drive for a short time, but should address code B0373 soon to avoid worsening the problem or failing an emissions test.

Q

How much does it cost to fix B0373?

A

The estimated repair cost for code B0373 is between $100 and $300. 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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Related Diagnostic Codes

Other codes that may appear with B0373

💡 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