← 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.

❓ Common Questions About B0373

Can I drive with code B0373?

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

How much does it cost to fix code B0373?

The estimated repair cost for code B0373 is between $100 and $300. This includes parts and labor. Prices may vary based on your vehicle's make and model.

Is code B0373 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 B0373 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 B0373

B0371 Sequential Code

B0371: Power Window Regulator Malfunction

Medium
B0372 Sequential Code

B0372: Seat Position Sensor Circuit Malfunction

Medium
B0374 Sequential Code

B0374: Immobilizer System Malfunction

Medium
B0375 Sequential Code

B0375: Audio System Fault

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