← View Generic P0345 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

P0345: P0345: 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 P0345 Mean on 2021 Honda PASSPORT?

A misfire in one or more cylinders has been detected, which can affect engine performance, fuel efficiency, and emissions.
⚠️

Symptoms

  • • Rough idling
  • • decreased power
  • • poor fuel economy
  • • engine knocking or pinging
  • • decreased acceleration
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Common Causes

  • • Faulty spark plugs
  • • ignition coils
  • • spark plug wires
  • • fuel injectors
  • • or cylinder head issues
🛠️

How to Fix P0345 on 2021 Honda PASSPORT

Replace spark plugs, ignition coils, or spark plug wires as needed. Check and clean or replace fuel injectors. Inspect and repair or replace the cylinder head 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 plugs Shop ↗ ignition coils Shop ↗ spark plug wires Shop ↗ fuel injectors Shop ↗

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OBD2 Scanner

Read & clear codes on your 2021 Honda PASSPORT

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Related Diagnostic Codes

Other codes that may appear with P0345

P0340 Same System

Camshaft Position Sensor Circuit Malfunction

High
P0341 Same System

P0341: Ignition System Misfire

Medium
P0342 Same System

P0342: Ignition System Misfire

Medium
P0343 Same System

P0343: Ignition System Misfire

Medium
P0344 Same System

P0344: 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