← View Generic B1689 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

B1689: B1689: Climate Control System Malfunction

on 2021 Honda PASSPORT

Fix Cost

$100 - $500

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 B1689 Mean on 2021 Honda PASSPORT?

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

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Symptoms

• Inconsistent temperature
• poor air flow
• faulty fan operation
• or no air flow at all.

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Common Causes

• Faulty climate control module
• clogged air ducts
• faulty temperature sensor
• or wiring issues.

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How to Fix B1689 on 2021 Honda PASSPORT

1. Check and clean air ducts; 2. Inspect and replace faulty temperature sensor; 3. Replace climate control module if faulty; 4. Check and repair wiring issues.

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Need Maintenance Info for Your PASSPORT?

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Parts for 2021 Honda PASSPORT

climate control module Shop ↗ temperature sensor Shop ↗ air duct cleaning kit Shop ↗

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Related Diagnostic Codes

Other codes that may appear with B1689

B1687 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