← Back to Search Severity: Medium

B0246

B0246: 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 B0246 Mean?

The immobilizer system has malfunctioned, preventing the vehicle from starting or running. This code indicates a problem with the immobilizer system's communication with the engine control module.
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Symptoms

  • Vehicle won't start
  • won't crank
  • or won't run
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Common Causes

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

1. Check the key fob battery level and replace if necessary. 2. Try reprogramming the key fob using a professional scan tool. 3. Replace the immobilizer system module if faulty. 4. Check for any loose connections or corrosion in the immobilizer system wiring.

Common Questions About B0246

Can I drive with code B0246?

You can drive for a short time, but should address code B0246 soon to avoid worsening the problem or failing an emissions test.

How much does it cost to fix code B0246?

The estimated repair cost for code B0246 is between $100 and $500. This includes parts and labor. Prices may vary based on your vehicle's make and model.

Is code B0246 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

professional scan tool multimeter wiring tester
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Need a Pro?

Complex codes like B0246 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 B0246

💡 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