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B0918

B0918: Immobilizer System Malfunction

Fix Cost
$200 - $500
Parts & Labor
Difficulty
3/5
Moderate
1-2 hours
DIY Possible?
❌ No
Pro recommended
Category
Body
System

📖 What Does B0918 Mean?

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

  • Vehicle will not start
  • immobilizer light on dashboard is illuminated
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Common Causes

  • Faulty immobilizer module
  • damaged or worn-out key fob
  • wiring damage or corrosion
  • faulty battery or low battery voltage
Fix Guide
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Possible Solutions

1. Check the immobilizer system wiring for damage or corrosion and repair as necessary. 2. Replace the key fob if damaged or worn out. 3. Check the immobilizer module for faults and replace if necessary. 4. Check the vehicle's battery voltage and charge or replace if necessary.

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Common Questions About B0918

Q

Can I drive with code B0918?

A

No, it is not recommended. Seeing code B0918 indicates a serious issue that could damage your engine or transmission if ignored. You should stop driving and have it inspected immediately.

Q

How much does it cost to fix B0918?

A

The estimated repair cost for code B0918 is between $200 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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Related Diagnostic Codes

Other codes that may appear with B0918

💡 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