← View Generic B3474 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

B3474: B3474: Door Locks Actuator Malfunction

on 2021 Honda PASSPORT

Fix Cost

$100 - $300

Parts & Labor

Difficulty

3/5

1-2 hours

DIY Possible?

✅ Yes

Save money

Your Vehicle

2021 Honda

PASSPORT

⚠️

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 B3474 Mean on 2021 Honda PASSPORT?

The B3474 code indicates a malfunction in the door lock actuator, which prevents the doors from locking or unlocking properly.

⚠️

Symptoms

• Doors won't lock or unlock
• may be stuck in a locked or unlocked position
• or may not respond to the door lock switch.

🔍

Common Causes

• Faulty door lock actuator
• wiring issues
• or a problem with the door lock switch.

🛠️

How to Fix B3474 on 2021 Honda PASSPORT

1. Disconnect the battery to reset the system. 2. Check and clean the door lock actuator and surrounding areas for debris. 3. Inspect and repair or replace the door lock actuator if damaged. 4. Check and repair any wiring issues. 5. Test the door lock switch and replace if faulty.

🔧

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

Door lock actuator Shop ↗ Wiring harness Shop ↗

Essential Tool

Must Have

OBD2 Scanner

Read & clear codes on your 2021 Honda PASSPORT

Shop Scanners ↗

🔗

Related Diagnostic Codes

Other codes that may appear with B3474

B3472 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