← View Generic P0608 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

P0608: P0608: Engine Control Module (ECM) Output Circuit 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 P0608 Mean on 2021 Honda PASSPORT?

The Engine Control Module (ECM) output circuit has malfunctioned, preventing the ECM from sending proper signals to other vehicle systems.

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Symptoms

• Engine light on
• poor engine performance
• rough idle
• decreased fuel efficiency

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Common Causes

• Faulty ECM output circuit
• wiring issues
• blown fuse
• ECM failure

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How to Fix P0608 on 2021 Honda PASSPORT

1. Check the ECM output circuit wiring for damage or corrosion. 2. Check the fuse box for blown fuses. 3. Test the ECM output circuit with a multimeter. 4. Replace the ECM if faulty.

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Need Maintenance Info for Your PASSPORT?

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Parts for 2021 Honda PASSPORT

ECM Shop ↗ wiring harness Shop ↗ fuses Shop ↗

Essential Tool

Must Have

OBD2 Scanner

Read & clear codes on your 2021 Honda PASSPORT

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Related Diagnostic Codes

Other codes that may appear with P0608

P0606 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