← View Generic B3938 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

B3938: B3938: Door Locks Malfunction

on 2021 Honda PASSPORT

Fix Cost

$100 - $300

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 B3938 Mean on 2021 Honda PASSPORT?

The B3938 code indicates a malfunction in the door lock system, which may cause the doors to malfunction or not lock/unlock properly.

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Symptoms

• Doors not locking/unlocking
• door locks stuck
• door ajar warning light on

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Common Causes

• Faulty door lock actuator
• wiring issue
• door lock module failure
• faulty door lock switch

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How to Fix B3938 on 2021 Honda PASSPORT

1. Check door lock actuator for proper operation and replace if faulty. 2. Inspect wiring for damage or corrosion and repair/reconnect as needed. 3. Replace door lock module if faulty. 4. Check door lock switch for proper operation and replace if faulty.

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Need Maintenance Info for Your PASSPORT?

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Parts for 2021 Honda PASSPORT

Door lock actuator Shop ↗ Wiring harness Shop ↗ Door lock module Shop ↗ Door lock switch Shop ↗

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Related Diagnostic Codes

Other codes that may appear with B3938

B3936 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