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P0301 2010 Nissan Pathfinder Code - Number 1 Cylinder Misfire Detected

Quick Answer

The diagnostic trouble code P0301 for a 2010 Nissan Pathfinder indicates that there is a misfire detected in the number 1 cylinder of the engine. Common causes include Faulty spark plug in the number 1 cylinder, Failing ignition coil in the number 1 cylinder, Clogged fuel injector in the number 1 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
P0301 2010 Nissan Pathfinder indicates Number 1 Cylinder Misfire Detected.
Common causes
Common causes include Faulty spark plug in the number 1 cylinder, Failing ignition coil in the number 1 cylinder, Clogged fuel injector in the number 1 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 17, 2024
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Code P0301 2010 Nissan Pathfinder Description

The diagnostic trouble code P0301 for a 2010 Nissan Pathfinder indicates that there is a misfire detected in the number 1 cylinder of the engine. This means that the fuel-air mixture in the cylinder is not igniting properly, leading to a lack of power, rough idling, and potentially increased emissions. A misfire can be caused by a variety of issues, including problems with the ignition system, fuel system, or engine mechanical components.

OBDII Code P0301 2010 Nissan Pathfinder - Number 1 Cylinder Misfire Detected
P0301 2010 Nissan Pathfinder Code - Number 1 Cylinder Misfire Detected

Common Causes of P0301 2010 Nissan Pathfinder

  1. Faulty spark plug in the number 1 cylinder.
  2. Failing ignition coil in the number 1 cylinder.
  3. Clogged fuel injector in the number 1 cylinder.
  4. Vacuum leak affecting the number 1 cylinder.
  5. Low compression in the number 1 cylinder.

Symptoms of P0301 2010 Nissan Pathfinder

  1. Rough idling or shaking while the engine is running.
  2. Loss of power or acceleration.
  3. Engine misfires or hesitation during acceleration.
  4. Check Engine Light illuminated on the dashboard.
  5. Increased fuel consumption.

How to Fix P0301 2010 Nissan Pathfinder

  1. Begin by diagnosing the specific cause of the misfire, such as testing the spark plug, ignition coil, fuel injector, and compression in the number 1 cylinder.
  2. Replace the faulty spark plug or ignition coil if either is found to be the cause of the misfire.
  3. Clean or replace the clogged fuel injector in the number 1 cylinder.
  4. Repair any vacuum leaks that may be affecting the number 1 cylinder.
  5. Address any issues with low compression in the number 1 cylinder, such as worn piston rings or a damaged cylinder head.

Cost to Fix P0301 2010 Nissan Pathfinder

The cost of repairing a number 1 cylinder misfire in a 2010 Nissan Pathfinder can vary depending on the specific cause of the issue. On average, the cost of replacing a spark plug or ignition coil can range from $50 to $200 per part, while cleaning or replacing a fuel injector may cost between $100 and $500. Labor costs can add an additional $100 to $300 per hour, with the total repair bill typically ranging from $150 to $1000. It's important to note that these are rough estimates, and actual costs may vary based on the location, labor rates, and parts availability. It's recommended to consult with a qualified mechanic for a more accurate cost estimate.

What does this mean?

Tech Notes for P0301 2010 Nissan Pathfinder

The P0301 code means that cylinder #1 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 #1. 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 P0301 2010 Nissan Pathfinder Code

1. What does the OBDII code P0301 mean for a 2010 Nissan Pathfinder?

P0301 indicates a misfire has been detected in cylinder 1 of the engine.

2. What are the symptoms of a P0301 code in a 2010 Nissan Pathfinder?

Symptoms may include rough idling, poor acceleration, reduced fuel efficiency, and the check engine light turning on.

3. What causes a P0301 code on a 2010 Nissan Pathfinder?

Common causes include a faulty spark plug, a bad ignition coil, a clogged fuel injector, low engine compression, or a vacuum leak near cylinder 1.

4. Can I drive my 2010 Nissan Pathfinder with a P0301 code?

Driving with a P0301 code is not recommended as it can cause engine damage, reduced performance, and increased emissions.

5. How do I fix a P0301 code on my 2010 Nissan Pathfinder?

Repairs may involve replacing the spark plug or ignition coil for cylinder 1, cleaning or replacing the fuel injector, or addressing any underlying mechanical issues.

6. How do I diagnose a P0301 code in a 2010 Nissan Pathfinder?

Diagnosis typically involves using an OBDII scanner to confirm the code, inspecting the spark plug, ignition coil, and fuel injector for cylinder 1, and checking for vacuum leaks or compression issues.

7. Can a dirty air filter cause a P0301 code in my 2010 Nissan Pathfinder?

While unlikely, a severely clogged air filter can restrict airflow to the engine and potentially contribute to misfires.

8. How much does it cost to fix a P0301 code on a 2010 Nissan Pathfinder?

Repair costs can range from $100 to $500 or more, depending on whether a simple spark plug replacement or more extensive repairs are needed.

9. Can a bad fuel injector cause a P0301 code on my 2010 Nissan Pathfinder?

Yes, a clogged or faulty fuel injector for cylinder 1 can disrupt fuel delivery and trigger a misfire.

10. Will resetting the check engine light fix the P0301 code on my 2010 Nissan Pathfinder?

Resetting the light without addressing the root cause will not fix the issue, and the code is likely to return.

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