← View Generic C1780 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

C1780: C1780: Suspension Damper Solenoid Valve Circuit Malfunction

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 C1780 Mean on 2021 Honda PASSPORT?

The suspension damper solenoid valve circuit has malfunctioned, which can cause uneven tire wear, vibration, and reduced ride comfort. (Toyota)

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Symptoms

• Unusual tire wear
• vibration
• reduced ride comfort
• uneven suspension movement

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Common Causes

• Faulty suspension damper solenoid valve
• wiring issues
• faulty electronic control unit

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How to Fix C1780 on 2021 Honda PASSPORT

Replace the suspension damper solenoid valve, inspect and repair or replace wiring as needed, update the electronic control unit software if necessary

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Parts for 2021 Honda PASSPORT

Suspension damper solenoid valve Shop ↗ Wiring harness Shop ↗

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Related Diagnostic Codes

Other codes that may appear with C1780

C1778 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