← View Generic B2421 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

B2421: B2421: Body System Code for Malfunctioning Headlight

on 2021 Honda PASSPORT

Fix Cost

$50 - $200

Parts & Labor

Difficulty

3/5

1-2 hours

DIY Possible?

✅ Yes

Save money

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 B2421 Mean on 2021 Honda PASSPORT?

This code indicates a problem with the headlight circuit, which may cause the headlights to malfunction or not turn on.

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Symptoms

• Headlights not turning on
• dim or flickering lights
• or warning lights on the dashboard

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Common Causes

• Faulty headlight switch
• bad headlight relay
• wiring issues
• or a blown fuse

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How to Fix B2421 on 2021 Honda PASSPORT

1. Check the headlight switch for corrosion or damage and clean or replace it if necessary. 2. Inspect the headlight relay and replace it if faulty. 3. Check the wiring and fuses for damage or corrosion and repair or replace as needed.

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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

headlight switch Shop ↗ headlight relay Shop ↗ fuses Shop ↗

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OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with B2421

B2419 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