← Back to Search Severity: Medium

B0574

B0574: Immobilizer System Malfunction

Fix Cost

$50 - $200

Parts & Labor

Difficulty

3/5

Moderate

1-2 hours

DIY Possible?

❌ No

Pro recommended

📖 What Does B0574 Mean?

The immobilizer system has detected a malfunction, preventing the engine from starting. This code is usually set when the immobilizer key fob battery is weak or dead.

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Symptoms

• Engine won't start
• key fob not recognized
• or intermittent starting issues

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Common Causes

• Weak or dead key fob battery
• faulty immobilizer system
• or incorrect key fob programming

Fix Guide

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Possible Solutions

Replace the key fob battery, reprogram the key fob, or replace the immobilizer system module

❓ Common Questions About B0574

Can I drive with code B0574?

You can drive for a short time, but should address code B0574 soon to avoid worsening the problem or failing an emissions test.

How much does it cost to fix code B0574?

The estimated repair cost for code B0574 is between $50 and $200. This includes parts and labor. Prices may vary based on your vehicle's make and model.

Is code B0574 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

OBD-II scan tool Immobilizer system tester

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Need a Pro?

Complex codes like B0574 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 B0574

B0572 Sequential Code

💡 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