← View Generic P0667 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

P0667: P0667: 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
⚠️

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 P0667 Mean on 2021 Honda PASSPORT?

The Engine Control Module (ECM) output circuit has malfunctioned, preventing the ECM from sending the correct signals to other engine components.
⚠️

Symptoms

  • • Check engine light
  • • rough engine idle
  • • decreased engine performance
  • • decreased fuel efficiency
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Common Causes

  • • Faulty ECM output circuit
  • • damaged or corroded wiring
  • • faulty engine sensors
🛠️

How to Fix P0667 on 2021 Honda PASSPORT

1. Check and clean the ECM output circuit wiring and connectors. 2. Replace the ECM output circuit if damaged or corroded. 3. Check and replace faulty engine sensors.

🔧

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Parts for 2021 Honda PASSPORT

ECM output circuit Shop ↗ wiring harness Shop ↗ engine sensors Shop ↗

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Related Diagnostic Codes

Other codes that may appear with P0667

P0665 Sequential Code

P0665: Engine Control Module (ECM) Output Circuit Malfunction

Medium
P0666 Sequential Code

P0666: Engine Control Module (ECM) Output Circuit Malfunction

Medium
P0668 Sequential Code

P0668: Engine Control Module (ECM) Output Circuit Malfunction

Medium
P0669 Sequential Code

P0669: Engine Control Module (ECM) Output Circuit Malfunction

Medium

💡 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