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P0305 2010 Nissan Pathfinder Code - Number 5 Cylinder Misfire Detected

Quick Answer

The diagnostic trouble code (DTC) P0305 for a 2010 Nissan Pathfinder indicates that a misfire has been detected in the number 5 cylinder of the engine. Common causes include Faulty spark plug in the number 5 cylinder, Failing ignition coil for the number 5 cylinder, Clogged or malfunctioning fuel injector for the number 5 cylinder. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0305 2010 Nissan Pathfinder indicates Number 5 Cylinder Misfire Detected.
Common causes
Common causes include Faulty spark plug in the number 5 cylinder, Failing ignition coil for the number 5 cylinder, Clogged or malfunctioning fuel injector for the number 5 cylinder.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 14, 2024
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Code P0305 2010 Nissan Pathfinder Description

The diagnostic trouble code (DTC) P0305 for a 2010 Nissan Pathfinder indicates that a misfire has been detected in the number 5 cylinder of the engine. This means that the engine's computer has detected that the cylinder is not firing properly, which can lead to a variety of issues affecting the vehicle's performance. A misfire occurs when the air-fuel mixture in the cylinder does not ignite at the right time or does not ignite at all, causing a disruption in the combustion process.

OBDII Code P0305 2010 Nissan Pathfinder - Number 5 Cylinder Misfire Detected
P0305 2010 Nissan Pathfinder Code - Number 5 Cylinder Misfire Detected

Common Causes of P0305 2010 Nissan Pathfinder

  1. Faulty spark plug in the number 5 cylinder
  2. Failing ignition coil for the number 5 cylinder
  3. Clogged or malfunctioning fuel injector for the number 5 cylinder
  4. Vacuum leaks affecting the number 5 cylinder
  5. Low compression in the number 5 cylinder due to worn piston rings or valves

Symptoms of P0305 2010 Nissan Pathfinder

  1. Rough idle
  2. Hesitation or stumbling during acceleration
  3. Decreased fuel efficiency
  4. Loss of power
  5. Engine vibrations

How to Fix P0305 2010 Nissan Pathfinder

  1. Diagnose the specific cause of the misfire in the number 5 cylinder using a scan tool to identify the exact issue.
  2. Replace the spark plug in the number 5 cylinder if it is found to be faulty.
  3. Test and potentially replace the ignition coil for the number 5 cylinder if it is failing.
  4. Clean or replace the fuel injector for the number 5 cylinder if it is clogged or malfunctioning.
  5. Check for vacuum leaks and repair as necessary, ensuring proper air intake for the number 5 cylinder.

Cost to Fix P0305 2010 Nissan Pathfinder

The typical repair costs for addressing a misfire in the number 5 cylinder of a 2010 Nissan Pathfinder can vary depending on the specific cause of the issue. On average, the cost of replacing a spark plug can range from $50 to $150, while replacing an ignition coil may cost between $100 and $300. Cleaning or replacing a fuel injector can range from $50 to $200. Labor costs can add to the total repair bill, with rates typically ranging from $80 to $150 per hour. It's recommended to consult with a local auto repair shop for a more accurate estimate based on your location and vehicle specifics.

What does this mean?

Tech Notes for P0305 2010 Nissan Pathfinder

The P0305 code means that cylinder #5 is misfiring or is randomly misfiring. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder #5. If the problem persists more tests need to be done to diagnose the problem. See "Possible Causes" for the most common problems.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0305 2010 Nissan Pathfinder Code

1. What does the OBDII code P0305 mean on a 2010 Nissan Pathfinder?

P0305 indicates a misfire has been detected in cylinder number 5, meaning it is not firing properly during the engine's combustion cycle.

2. What are the common symptoms of code P0305 in a 2010 Nissan Pathfinder?

Symptoms may include a rough idle, reduced engine power, poor fuel economy, engine hesitation, or the check engine light being illuminated.

3. What causes a P0305 code on a 2010 Nissan Pathfinder?

Common causes include a faulty spark plug, a bad ignition coil, a clogged fuel injector, low cylinder compression, or a vacuum leak near cylinder 5.

4. Can I drive my 2010 Nissan Pathfinder with a P0305 code?

Driving with a misfire can cause engine damage over time, including potential damage to the catalytic converter. It’s best to address the issue promptly.

5. How do I diagnose a P0305 code on my 2010 Nissan Pathfinder?

Start by inspecting the spark plug, ignition coil, and fuel injector for cylinder 5. You can also check for vacuum leaks, test compression, and scan for additional codes.

6. How do I fix a P0305 code on my 2010 Nissan Pathfinder?

Common fixes include replacing the spark plug or ignition coil for cylinder 5, cleaning or replacing the fuel injector, fixing vacuum leaks, or addressing low compression issues.

7. What spark plug type is recommended for a 2010 Nissan Pathfinder?

The 2010 Nissan Pathfinder typically uses NGK or Denso iridium spark plugs. Always check your owner’s manual for the exact specification.

8. Can a dirty air filter cause a P0305 code?

While a dirty air filter can affect overall engine performance, it is unlikely to cause a specific cylinder misfire like P0305. Other issues such as spark or fuel delivery are more probable causes.

9. How much does it cost to repair a P0305 code on a 2010 Nissan Pathfinder?

Repair costs vary but typically range from $100 to $300 for parts and labor, depending on whether the issue is a spark plug, ignition coil, or fuel injector.

10. Can a bad catalytic converter cause a P0305 code?

A failing catalytic converter is usually a result of prolonged misfires rather than a cause of them. However, addressing misfires quickly can help protect the catalytic converter.

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