← View Generic B0566 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

B0566: B0566: Immobilizer System Malfunction

on 2021 Honda PASSPORT

Fix Cost

$50 - $200

Parts & Labor

Difficulty

3/5

1-2 hours

DIY Possible?

❌ No

Pro recommended

Your Vehicle

2021 Honda

PASSPORT

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Important for 2021 Honda PASSPORT Owners

Before starting repairs, verify which engine your 2021 Honda PASSPORT has. Check your VIN or engine code to ensure you order the correct parts.

📖 What Does B0566 Mean on 2021 Honda PASSPORT?

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

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How to Fix B0566 on 2021 Honda PASSPORT

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.

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Need Maintenance Info for Your PASSPORT?

Get oil capacity, filter specs, and torque settings for your specific 2021 Honda PASSPORT.

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Parts for 2021 Honda PASSPORT

immobilizer module Shop ↗ key fob Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with B0566

B0564 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