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Engine-Codes – Nissan – P0304 2008 Nissan Rogue

P0304 2008 Nissan Rogue Code - Number 4 Cylinder Misfire Detected

Quick Answer

The P0304 diagnostic code for a 2008 Nissan Rogue indicates that a misfire has been detected in the number 4 cylinder of the engine. Common causes include Faulty spark plug in cylinder 4, Failing ignition coil in cylinder 4, Clogged fuel injector in cylinder 4. 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 2008 Nissan Rogue indicates Number 4 Cylinder Misfire Detected.
Common causes
Common causes include Faulty spark plug in cylinder 4, Failing ignition coil in cylinder 4, Clogged fuel injector in cylinder 4.
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 Aug 30, 2024
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Code P0304 2008 Nissan Rogue Description

The P0304 diagnostic code for a 2008 Nissan Rogue indicates that a misfire has been detected in the number 4 cylinder of the engine. This means that the fuel-air mixture in that particular cylinder is not igniting properly, leading to a disruption in the combustion process. As a result, the engine may experience a rough idle, reduced power, decreased fuel efficiency, and potentially even engine stalling. Ignoring this issue can lead to further damage to the engine, such as catalytic converter failure.

OBDII Code P0304 2008 Nissan Rogue - Number 4 Cylinder Misfire Detected
P0304 2008 Nissan Rogue Code - Number 4 Cylinder Misfire Detected

Common Causes of P0304 2008 Nissan Rogue

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

Symptoms of P0304 2008 Nissan Rogue

  1. Engine misfiring or rough idling
  2. Loss of power or acceleration
  3. Increased fuel consumption
  4. Engine vibration
  5. Check engine light illuminated

How to Fix P0304 2008 Nissan Rogue

  1. Diagnose the specific cause of the misfire by performing a cylinder compression test, checking spark plugs, ignition coils, and fuel injectors.
  2. Replace the faulty spark plug in cylinder 4 if necessary.
  3. Replace the failing ignition coil in cylinder 4 if necessary.
  4. Clean or replace the clogged fuel injector in cylinder 4 if necessary.
  5. Repair any vacuum leaks affecting cylinder 4.

Cost to Fix P0304 2008 Nissan Rogue

The cost of repairing a misfire in the number 4 cylinder of a 2008 Nissan Rogue can vary depending on the specific cause of the issue. Typically, the cost of replacing a spark plug or ignition coil ranges from $50 to $200 per part, while cleaning or replacing a fuel injector can cost between $50 and $300. Labor costs can add another $100 to $200 on top of parts costs. Therefore, the total repair cost can range from $150 to $700 or more. It's important to keep in mind that prices can vary based on location and the specific repair shop, so it's advisable to get quotes from multiple sources before proceeding with the repair.

What does this mean?

Tech Notes for P0304 2008 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 2008 Nissan Rogue Code

1. What are the common symptoms of OBDII code P0304 in a 2008 Nissan Rogue?

The common symptoms of code P0304 (Number 4 Cylinder Misfire Detected) in a 2008 Nissan Rogue include rough idling, engine vibrations, loss of power, and potentially an illuminated check engine light.

2. What are the possible causes of a number 4 cylinder misfire in a 2008 Nissan Rogue?

The possible causes of a number 4 cylinder misfire in a 2008 Nissan Rogue can include faulty spark plugs, ignition coils, fuel injectors, vacuum leaks, low compression, or issues with the engine's timing.

3. How can I diagnose a number 4 cylinder misfire in my 2008 Nissan Rogue?

To diagnose a number 4 cylinder misfire in your 2008 Nissan Rogue, you can use an OBDII scanner to read the trouble code, visually inspect the spark plugs and ignition coils, perform a compression test, and check for vacuum leaks.

4. Can I continue driving my 2008 Nissan Rogue with OBDII code P0304?

It is not recommended to continue driving your 2008 Nissan Rogue with OBDII code P0304 as a misfiring cylinder can cause damage to the catalytic converter and other components. It is best to address the issue promptly.

5. How can I repair OBDII code P0304 in my 2008 Nissan Rogue?

To repair OBDII code P0304 in your 2008 Nissan Rogue, you may need to replace the spark plugs, ignition coils, fuel injectors, or address any other underlying issues causing the misfire. It's recommended to consult a mechanic for a proper diagnosis and repair.

6. Are there any DIY tips to troubleshoot code P0304 in a 2008 Nissan Rogue?

You can start by checking the spark plugs and ignition coils for wear or damage, inspecting for vacuum leaks, ensuring proper fuel delivery, and performing a compression test. However, for accurate diagnosis and repair, it's best to seek professional help.

7. Is OBDII code P0304 a serious issue in a 2008 Nissan Rogue?

While code P0304 may not always indicate a critical issue, it can lead to decreased fuel efficiency, engine performance, and potentially cause further damage if left unresolved. It's advisable to address the misfire promptly.

8. How much does it cost to fix OBDII code P0304 in a 2008 Nissan Rogue?

The cost to fix OBDII code P0304 in a 2008 Nissan Rogue can vary depending on the cause of the misfire and the parts or components that need replacement. Repair costs can range from a few hundred to over a thousand dollars.

9. Can a dirty air filter cause OBDII code P0304 in a 2008 Nissan Rogue?

A dirty air filter is unlikely to directly cause OBDII code P0304 (Number 4 Cylinder Misfire Detected) in a 2008 Nissan Rogue. However, a clogged air filter can affect engine performance and fuel efficiency, so it's recommended to replace it regularly to maintain optimal engine operation.

10. How often should I replace spark plugs in a 2008 Nissan Rogue to prevent OBDII code P0304?

It's generally recommended to replace spark plugs every 30,000 to 100,000 miles in a 2008 Nissan Rogue, depending on the type of spark plugs used. Regular maintenance of spark plugs can help prevent misfires and potential OBDII code P0304 occurrences.

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