← View Generic B0749 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

B0749: B0749: Body Control Module (BCM) - Exterior Lighting Circuit Malfunction

on 2021 Honda PASSPORT

Fix Cost

$100 - $500

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 B0749 Mean on 2021 Honda PASSPORT?

The Body Control Module (BCM) has detected a malfunction in the exterior lighting circuit, which may cause issues with the vehicle's headlights, taillights, or other exterior lights.

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Symptoms

• Dim or inoperative exterior lights
• faulty headlight or taillight operation
• or warning lights on the dashboard.

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Common Causes

• Faulty BCM
• wiring issues
• blown fuses
• or damaged exterior lights.

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How to Fix B0749 on 2021 Honda PASSPORT

1. Check the BCM fuse and replace if blown. 2. Inspect and repair or replace wiring as needed. 3. Test and replace faulty exterior lights. 4. Update BCM software if necessary.

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Need Maintenance Info for Your PASSPORT?

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Parts for 2021 Honda PASSPORT

BCM fuse Shop ↗ wiring harness Shop ↗ exterior lights Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with B0749

B0747 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