← View Generic P0387 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

P0387: P0387: Ignition System Misfire

on 2021 Honda PASSPORT

Fix Cost
$100 - $500
Parts & Labor
Difficulty
3/5
1-2 hours
DIY Possible?
✅ Yes
Save money
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 P0387 Mean on 2021 Honda PASSPORT?

A misfire detected in one or more cylinders, affecting combustion efficiency, which can cause decreased engine performance, rough idling, and decreased fuel efficiency.
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Symptoms

  • • Rough idling
  • • decreased engine performance
  • • decreased fuel efficiency
  • • engine misfire
  • • decreased power
  • • and decreased acceleration.
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Common Causes

  • • Faulty spark plug
  • • faulty ignition coil
  • • faulty fuel injector
  • • faulty oxygen sensor
  • • faulty ignition module
  • • or a vacuum leak.
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How to Fix P0387 on 2021 Honda PASSPORT

1. Check and replace the spark plug if faulty. 2. Check and replace the ignition coil if faulty. 3. Check and replace the fuel injector if faulty. 4. Check and replace the oxygen sensor if faulty. 5. Check and replace the ignition module if faulty. 6. Check for vacuum leaks and repair if necessary.

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Need Maintenance Info for Your PASSPORT?

Get oil capacity, filter specs, and torque settings for your specific 2021 Honda PASSPORT.

View 2021 Honda PASSPORT Specs

Parts for 2021 Honda PASSPORT

spark plug Shop ↗ ignition coil Shop ↗ fuel injector Shop ↗ oxygen sensor Shop ↗ ignition module 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 P0387

P0385 Sequential Code

P0385: Ignition System Misfire

Medium
P0386 Sequential Code

P0386: Ignition System Misfire

Medium
P0388 Sequential Code

P0388: Ignition System Misfire

Medium
P0389 Sequential Code

P0389: Ignition System Misfire

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