← View Generic B3850 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

B3850: B3850: Door Locks Actuator Malfunction

on 2021 Honda PASSPORT

Fix Cost

$50 - $200

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 B3850 Mean on 2021 Honda PASSPORT?

The B3850 code indicates a malfunction in the door lock actuator, which may cause the doors to malfunction or not lock/unlock properly.

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Symptoms

• Doors won't lock/unlock
• door locks stuck
• or unusual noises from the door locks

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Common Causes

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

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How to Fix B3850 on 2021 Honda PASSPORT

1. Check the door lock actuator for signs of wear or damage. Replace if necessary. 2. Inspect the wiring and connectors for damage or corrosion. Repair or replace as needed. 3. Check the door lock module for any errors or faults. Clear any error codes and test the door locks.

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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 ↗

Essential Tool

Must Have

OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with B3850

B3848 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