← Back to Search Severity: Medium

B0718

B0718: Immobilizer System Malfunction

Fix Cost
$100 - $500
Parts & Labor
Difficulty
3/5
Moderate
1-2 hours
DIY Possible?
❌ No
Pro recommended
Category
Body
System

📖 What Does B0718 Mean?

The immobilizer system has detected a malfunction, preventing the vehicle from starting. This code is usually related to a faulty immobilizer module, key fob, or wiring issue.
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Symptoms

  • Vehicle won't start
  • dashboard warning light is illuminated
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Common Causes

  • Faulty immobilizer module
  • key fob
  • wiring issue
  • or battery drain
Fix Guide
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Possible Solutions

1. Check the key fob battery level and replace if necessary. 2. Inspect the wiring harness for damage or corrosion. 3. Test the immobilizer module using a scan tool. 4. Replace the immobilizer module if faulty.

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Common Questions About B0718

Q

Can I drive with code B0718?

A

You can drive for a short time, but should address code B0718 soon to avoid worsening the problem or failing an emissions test.

Q

How much does it cost to fix B0718?

A

The estimated repair cost for code B0718 is between $100 and $500. 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 B0718 can be tricky. Don't risk it if you're unsure.

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Related Diagnostic Codes

Other codes that may appear with B0718

💡 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