← View Generic C3985 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

C3985: C3985: Rear Suspension Damper Fault

on 2021 Honda PASSPORT

Fix Cost

$200 - $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 C3985 Mean on 2021 Honda PASSPORT?

The C3985 code indicates a fault in the rear suspension damper, which can cause uneven tire wear, vibrations, and reduced handling.

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Symptoms

• Vibrations while driving
• uneven tire wear
• reduced handling
• and a clunking or rattling noise from the rear suspension.

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Common Causes

• Faulty rear suspension damper
• worn or damaged suspension components
• or incorrect damper adjustment.

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How to Fix C3985 on 2021 Honda PASSPORT

1. Inspect the rear suspension damper for signs of wear or damage. 2. Check the damper adjustment and adjust if necessary. 3. Replace the damper if faulty. 4. Inspect and replace any worn or damaged suspension components.

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Parts for 2021 Honda PASSPORT

Rear suspension damper Shop ↗ Suspension components Shop ↗

Essential Tool

Must Have

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Related Diagnostic Codes

Other codes that may appear with C3985

C3983 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