← View Generic B1406 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

B1406: B1406: 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 B1406 Mean on 2021 Honda PASSPORT?

The immobilizer system has detected a malfunction, preventing the engine from starting. This code is typically set when the immobilizer system is not functioning correctly, preventing the engine from starting.

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Symptoms

• Engine won't start
• immobilizer light on dashboard

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Common Causes

• Faulty immobilizer sensor
• faulty immobilizer module
• incorrect key or fob battery

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How to Fix B1406 on 2021 Honda PASSPORT

1. Check the immobilizer sensor and module for any signs of damage or corrosion. Clean or replace as necessary. 2. Check the key or fob battery and replace if necessary. 3. If the issue persists, reprogram the immobilizer system using a scan tool.

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Need Maintenance Info for Your PASSPORT?

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

View 2021 Honda PASSPORT Specs

Parts for 2021 Honda PASSPORT

immobilizer sensor Shop ↗ immobilizer module Shop ↗

Essential Tool

Must Have

OBD2 Scanner

Read & clear codes on your 2021 Honda PASSPORT

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Related Diagnostic Codes

Other codes that may appear with B1406

B1404 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