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P0301 2004 Infiniti G35 Code - Number 1 Cylinder Misfire Detected

Quick Answer

The diagnostic trouble code P0301 indicates that there is a misfire detected in the number 1 cylinder of the engine. Common causes include Worn or fouled spark plug, Faulty ignition coil, Clogged fuel injector. 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 2004 Infiniti G35 indicates Number 1 Cylinder Misfire Detected.
Common causes
Common causes include Worn or fouled spark plug, Faulty ignition coil, Clogged fuel injector.
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 07, 2024
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Code P0301 2004 Infiniti G35 Description

The diagnostic trouble code P0301 indicates that there is a misfire detected in the number 1 cylinder of the engine. In this specific case of a 2004 Infiniti G35, this means that there is an issue with the ignition system or fuel system that is causing the engine to not fire properly in the number 1 cylinder. This can lead to poor engine performance, reduced fuel efficiency, and potentially cause damage to the catalytic converter over time.

OBDII Code P0301 2004 Infiniti G35 - Number 1 Cylinder Misfire Detected
P0301 2004 Infiniti G35 Code - Number 1 Cylinder Misfire Detected

Common Causes of P0301 2004 Infiniti G35

  1. Worn or fouled spark plug
  2. Faulty ignition coil
  3. Clogged fuel injector
  4. Vacuum leak
  5. Low compression in the cylinder

Symptoms of P0301 2004 Infiniti G35

  1. Rough idle or shaky engine performance
  2. Loss of power or acceleration
  3. Engine hesitation or stumbling
  4. Check Engine Light illuminated
  5. Increased fuel consumption

How to Fix P0301 2004 Infiniti G35

  1. Begin by checking the spark plug in the number 1 cylinder and replacing it if necessary.
  2. Inspect the ignition coil for any signs of damage or malfunction and replace if needed.
  3. Test the fuel injector in the number 1 cylinder for proper function and clean or replace as required.
  4. Check for any vacuum leaks in the intake system and repair as needed.
  5. Perform a compression test on the number 1 cylinder to ensure it is within the manufacturer's specifications.

Cost to Fix P0301 2004 Infiniti G35

The cost of repairing a misfire in the number 1 cylinder of a 2004 Infiniti G35 can vary depending on the specific cause of the issue. However, on average, you can expect to pay between $100 and $500 for parts and labor. This estimate includes the cost of diagnostic time, replacement parts, and the technician's labor. Keep in mind that prices can fluctuate based on your location, the shop you choose, and the severity of the problem. It's recommended to get a few quotes from different auto repair shops to ensure you are getting a fair price for the repair.

What does this mean?

Tech Notes for P0301 2004 Infiniti G35

The P0301 code means that the 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 needs to be done to diagnose problem, see "Possible Causes"

When is the Code Detected?

Engine Cylinder 1 is misfiring.

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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 2004 Infiniti G35 Code

1. What are the common symptoms of OBDII code P0301 on a 2004 Infiniti G35?

A: Common symptoms of P0301 (Number 1 Cylinder Misfire Detected) on a 2004 Infiniti G35 include rough idling, loss of power, and potential engine vibration.

2. What are the possible causes of a P0301 code on a 2004 Infiniti G35?

A: The P0301 code on a 2004 Infiniti G35 can be caused by issues such as a faulty ignition coil, spark plug, fuel injector, vacuum leak, or low compression in the number 1 cylinder.

3. How can I diagnose the specific cause of a P0301 code on my 2004 Infiniti G35?

A: To diagnose the specific cause of a P0301 code, you can perform tests such as checking the spark plug, ignition coil, fuel injector, and conducting a compression test on the number 1 cylinder.

4. Can driving with a P0301 code on a 2004 Infiniti G35 cause further damage?

A: Continuing to drive with a P0301 code on a 2004 Infiniti G35 can potentially lead to damage to the catalytic converter, so it is recommended to address the issue promptly.

5. How can I repair a P0301 code on my 2004 Infiniti G35?

A: Repairing a P0301 code on a 2004 Infiniti G35 involves identifying and fixing the underlying issue, which may include replacing the faulty ignition coil, spark plug, fuel injector, or addressing any vacuum leaks.

6. Is it safe to continue driving my 2004 Infiniti G35 with a P0301 code if the engine seems to be running fine?

A: Even if the engine seems to be running fine with a P0301 code, it is best to address the issue promptly to prevent potential long-term damage and ensure optimal performance of your vehicle.

7. How much does it typically cost to fix a P0301 code on a 2004 Infiniti G35?

A: The cost to fix a P0301 code on a 2004 Infiniti G35 can vary depending on the specific cause of the misfire, but it may range from a few hundred to a few thousand dollars, including parts and labor.

8. Can a P0301 code on a 2004 Infiniti G35 be triggered by a simple issue like a loose gas cap?

A: While a loose gas cap can trigger a different code related to the fuel system, a P0301 code specifically indicates a misfire in the number 1 cylinder and is usually caused by more significant issues like ignition or fuel delivery problems.

9. Will resetting the OBDII system clear a P0301 code on a 2004 Infiniti G35?

A: Resetting the OBDII system may temporarily clear the P0301 code, but if the underlying issue causing the misfire is not addressed, the code is likely to reappear after driving the vehicle for some time.

10. Can a P0301 code on a 2004 Infiniti G35 be caused by a failing mass airflow sensor (MAF)?

A: While a failing MAF sensor can potentially cause engine performance issues, a P0301 code specifically indicates a misfire in the number 1 cylinder and is more likely to be related to ignition or fuel delivery components.

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