← View Generic P0305 Guide Severity: High
🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

P0305: Cylinder 5 Misfire Detected

on 2021 Honda PASSPORT

Fix Cost
$20 - $300
Parts & Labor
Difficulty
2/5
30 mins - 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 P0305 Mean on 2021 Honda PASSPORT?

The engine control module has detected a misfire specifically in cylinder 5. This applies to engines with 5 or more cylinders.
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Symptoms

  • • Rough idle
  • • engine shaking
  • • loss of power
  • • flashing check engine light during acceleration
  • • poor fuel economy.
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Common Causes

  • • Faulty spark plug in cylinder 5
  • • bad ignition coil
  • • clogged fuel injector
  • • low compression
  • • carbon buildup.
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How to Fix P0305 on 2021 Honda PASSPORT

Replace spark plug for cylinder 5, test ignition coil, clean fuel injector, perform compression test, remove carbon deposits.

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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 Plugs Shop ↗ Ignition Coils Shop ↗ Spark Plug Wires 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 P0305

P0171 Related Problem

System Too Lean Bank 1

Medium
P0174 Related Problem

System Too Lean Bank 2

Medium
P0300 Same System

Random/Multiple Cylinder Misfire Detected

High
P0301 Same System

Cylinder 1 Misfire Detected

High
P0306 Same System

Cylinder 6 Misfire Detected

High

💡 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