← View Generic B2670 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

B2670: B2670: Body System Security Malfunction

on 2021 Honda PASSPORT

Fix Cost

$200 - $800

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 B2670 Mean on 2021 Honda PASSPORT?

The body control module (BCM) has detected a security malfunction, which may be caused by a faulty BCM, wiring issue, or other security system component.

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Symptoms

• Alarm system malfunction
• doors or trunk won't unlock
• or security light on dashboard

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Common Causes

• Faulty BCM
• wiring issue
• faulty security system component
• or incorrect programming

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How to Fix B2670 on 2021 Honda PASSPORT

1. Check BCM wiring and connections for damage or corrosion. 2. Update BCM software if necessary. 3. Replace faulty BCM or security system component. 4. Check and reset security system settings.

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Need Maintenance Info for Your PASSPORT?

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Parts for 2021 Honda PASSPORT

Body Control Module Shop ↗ Wiring harness 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 B2670

B2668 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