← View Generic B1874 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

B1874: B1874: 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

⚠️

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 B1874 Mean on 2021 Honda PASSPORT?

This code indicates a malfunction in the door lock system, which may cause doors to lock or unlock unexpectedly, or fail to lock/unlock at all.

⚠️

Symptoms

• Doors lock/unlock randomly
• doors fail to lock/unlock
• door lock switch malfunctions

🔍

Common Causes

• Faulty door lock actuator
• wiring issue
• faulty door lock switch
• faulty body control module

🛠️

How to Fix B1874 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/replace as needed. 3. Test door lock switch and replace if faulty. 4. Update body control module software if necessary.

🔧

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 ↗ Door lock switch Shop ↗ Body control module 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 B1874

B1872 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