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Engine-Codes – Nissan – P0304 2012 Nissan Rogue

P0304 2012 Nissan Rogue Code - Number 4 Cylinder Misfire Detected

Quick Answer

The diagnostic trouble code P0304 for a 2012 Nissan Rogue indicates that a misfire has been detected in the number 4 cylinder of the engine. Common causes include Faulty ignition system components such as spark plugs, ignition coils, or spark plug wires, Fuel delivery issues, such as a clogged fuel injector or fuel filter, Vacuum leaks in the intake manifold or vacuum hoses. 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
P0304 2012 Nissan Rogue indicates Number 4 Cylinder Misfire Detected.
Common causes
Common causes include Faulty ignition system components such as spark plugs, ignition coils, or spark plug wires, Fuel delivery issues, such as a clogged fuel injector or fuel filter, Vacuum leaks in the intake manifold or vacuum hoses.
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 12, 2024
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Code P0304 2012 Nissan Rogue Description

The diagnostic trouble code P0304 for a 2012 Nissan Rogue indicates that a misfire has been detected in the number 4 cylinder of the engine. This means that the engine control module (ECM) has detected that the cylinder is not firing properly, which can lead to a variety of performance issues. A misfire occurs when there is incomplete combustion in the cylinder, causing a lack of power, rough idling, and potentially engine vibration.

OBDII Code P0304 2012 Nissan Rogue - Number 4 Cylinder Misfire Detected
P0304 2012 Nissan Rogue Code - Number 4 Cylinder Misfire Detected

Common Causes of P0304 2012 Nissan Rogue

  1. Faulty ignition system components such as spark plugs, ignition coils, or spark plug wires.
  2. Fuel delivery issues, such as a clogged fuel injector or fuel filter.
  3. Vacuum leaks in the intake manifold or vacuum hoses.
  4. Engine mechanical problems, such as low compression in the number 4 cylinder.
  5. ECM software or hardware issues causing incorrect timing or fuel delivery.

Symptoms of P0304 2012 Nissan Rogue

  1. Rough idling: The engine may idle roughly or shake when the number 4 cylinder misfires.
  2. Loss of power: The vehicle may experience a decrease in power and acceleration when the cylinder is not firing correctly.
  3. Engine vibration: Misfires can cause the engine to vibrate, especially noticeable at idle or under load.
  4. Check Engine Light: The Check Engine Light may illuminate on the dashboard to indicate the misfire.

How to Fix P0304 2012 Nissan Rogue

  1. Perform a diagnostic scan: Use a scan tool to retrieve the trouble code and determine the specific cylinder misfiring.
  2. Inspect ignition components: Check the spark plugs, ignition coils, and spark plug wires for wear or damage and replace if necessary.
  3. Check fuel system: Inspect the fuel injectors, fuel filter, and fuel pressure regulator for any issues and address as needed.
  4. Compression test: Perform a compression test on the number 4 cylinder to check for any mechanical issues.
  5. Clear codes and test drive: After completing repairs, clear the trouble code from the ECM and test drive the vehicle to ensure the misfire has been resolved.

Cost to Fix P0304 2012 Nissan Rogue

The cost to repair a number 4 cylinder misfire in a 2012 Nissan Rogue can vary depending on the specific issue causing the misfire. On average, the cost of parts for ignition components such as spark plugs, ignition coils, or fuel injectors can range from $100 to $300. Labor costs at an auto repair shop typically range from $80 to $150 per hour. The total cost of the repair can be anywhere from $200 to $500 or more, depending on the extent of the issue and the shop's labor rates. It's recommended to get a detailed estimate from a reputable auto repair shop before proceeding with the repairs.

What does this mean?

Tech Notes for P0304 2012 Nissan Rogue

The P0304 code means that cylinder #4 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 #4. 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 P0304 2012 Nissan Rogue Code

1. What does OBDII code P0304 on a 2012 Nissan Rogue indicate?

- OBDII code P0304 for a 2012 Nissan Rogue points to a "Number 4 Cylinder Misfire Detected."

2. What are common symptoms of a P0304 code on a 2012 Nissan Rogue?

- Common symptoms include rough idling, a noticeable decrease in engine performance, and potential engine vibrations.

3. What are the possible causes of a P0304 code on a 2012 Nissan Rogue?

- Causes can include faulty spark plugs, a failing ignition coil, vacuum leaks, issues with fuel injectors, or even a problem with the engine's compression.

4. How can I diagnose a P0304 code on my 2012 Nissan Rogue?

- Diagnosing a P0304 code typically involves checking the spark plugs, ignition coil, fuel injectors, and performing a compression test on the number 4 cylinder.

5. Can driving with a P0304 code harm my 2012 Nissan Rogue?

- Continuing to drive with a P0304 code can potentially cause damage to the catalytic converter over time, so it's advisable to address the issue promptly.

6. Are there any simple repair tips for a P0304 code on a 2012 Nissan Rogue?

- Simple repair tips can include replacing the spark plugs, inspecting the ignition coil, checking for vacuum leaks, and ensuring proper fuel injector function.

7. Should I clear the P0304 code on my 2012 Nissan Rogue after repairing the issue?

- It's recommended to clear the code after addressing the underlying problem. This allows you to monitor if the issue reoccurs and ensures proper functioning of the vehicle's systems.

8. Can a P0304 code on a 2012 Nissan Rogue be a recurring problem?

- Yes, a P0304 code can recur if the root cause, such as a failing ignition component or fuel injector issue, is not fully resolved during the initial repair.

9. How much does it typically cost to fix a P0304 code on a 2012 Nissan Rogue?

- The cost of fixing a P0304 code can vary based on the specific issue, but it may range from a simple spark plug replacement to more complex repairs involving ignition components or engine diagnostics.

10. Is it advisable to seek professional help for a P0304 code on a 2012 Nissan Rogue?

- If you're unsure about diagnosing or repairing the P0304 code yourself, it's recommended to consult a qualified mechanic or technician to ensure the issue is properly addressed.

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