← View Generic B1889 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

B1889: B1889: Climate Control System Malfunction

on 2021 Honda PASSPORT

Fix Cost

$100 - $500

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 B1889 Mean on 2021 Honda PASSPORT?

This code indicates a malfunction in the climate control system, which may cause issues with temperature regulation, air flow, or fan operation.

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Symptoms

• Inconsistent air temperature
• poor air flow
• fan not working
• or unusual noises from the climate control system.

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Common Causes

• Faulty temperature sensor
• clogged air ducts
• malfunctioning blower motor
• or software issue.

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How to Fix B1889 on 2021 Honda PASSPORT

1. Check and clean air ducts. 2. Replace faulty temperature sensor. 3. Inspect and replace blower motor if necessary. 4. Update software if software issue is detected.

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Need Maintenance Info for Your PASSPORT?

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Parts for 2021 Honda PASSPORT

temperature sensor Shop ↗ air duct cleaning kit Shop ↗ blower motor Shop ↗

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Related Diagnostic Codes

Other codes that may appear with B1889

B1887 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