← Back to Search Severity: Medium

B0566

B0566: Immobilizer System Malfunction

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

📖 What Does B0566 Mean?

The immobilizer system has detected a malfunction, preventing the vehicle from starting or running. This code is typically set when the vehicle's immobilizer system is not functioning correctly.
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Symptoms

  • Vehicle won't start
  • warning lights on dashboard
  • immobilizer system error message displayed
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Common Causes

  • Faulty immobilizer module
  • faulty key fob
  • low battery in key fob
  • incorrect key fob programming
Fix Guide
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Possible Solutions

1. Check key fob battery level and replace if necessary. 2. Check key fob programming and reprogram if necessary. 3. Check immobilizer module for faults and replace if necessary. 4. Check for any loose connections in the immobilizer system.

Common Questions About B0566

Can I drive with code B0566?

You can drive for a short time, but should address code B0566 soon to avoid worsening the problem or failing an emissions test.

How much does it cost to fix code B0566?

The estimated repair cost for code B0566 is between $50 and $200. This includes parts and labor. Prices may vary based on your vehicle's make and model.

Is code B0566 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 diagnostic scanner
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Need a Pro?

Complex codes like B0566 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 B0566

💡 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