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P0306 Infiniti Code - Number 6 Cylinder Misfire Detected

Quick Answer

When an Infiniti vehicle displays diagnostic code P0306, it indicates a misfire has been detected in the number 6 cylinder of the engine. Common causes include Faulty ignition coil, Spark plug issues, 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
P0306 Infiniti indicates Number 6 Cylinder Misfire Detected.
Common causes
Common causes include Faulty ignition coil, Spark plug issues, 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 Aug 18, 2024
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Code P0306 Infiniti Description

When an Infiniti vehicle displays diagnostic code P0306, it indicates a misfire has been detected in the number 6 cylinder of the engine. This means that the cylinder is not functioning properly, leading to a disruption in the combustion process. A misfire can cause a variety of issues within the engine, including reduced power, rough idling, poor fuel efficiency, and increased emissions. Ignoring this code can potentially lead to more severe engine damage over time, such as catalytic converter failure or damage to the engine components.

OBDII Code P0306 Infiniti - Number 6 Cylinder Misfire Detected
P0306 Infiniti Code - Number 6 Cylinder Misfire Detected

Common Causes of P0306 Infiniti

  1. Faulty ignition coil
  2. Spark plug issues
  3. Clogged fuel injector
  4. Vacuum leak
  5. Low compression in the cylinder

Symptoms of P0306 Infiniti

  1. Check engine light illuminated
  2. Engine running rough or shaking
  3. Loss of power or acceleration
  4. Increased fuel consumption
  5. Rough idling or stalling

How to Fix P0306 Infiniti

  1. Diagnose the specific cause of the misfire by conducting a thorough inspection of the ignition system, fuel system, and compression levels.
  2. Replace the faulty ignition coil, spark plug, or fuel injector if necessary.
  3. Check for any vacuum leaks and repair as needed.
  4. Perform a compression test to determine if there are any issues with the cylinder's compression levels.
  5. Clear the diagnostic trouble codes and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0306 Infiniti

The cost of repairing a misfire in the number 6 cylinder of an Infiniti vehicle can vary depending on the specific cause of the issue. On average, the repair costs can range from $100 to $500, including parts and labor. However, it's important to note that prices can fluctuate based on the location of the repair shop, the vehicle's make and model, and the type of engine. Additionally, diagnostic time and labor rates can impact the overall cost, with hourly rates typically ranging between $80 and $150. It's recommended to obtain quotes from multiple repair shops to determine the most cost-effective option.

What does this mean?

Tech Notes for P0306 Infiniti

The P0306 code means that cylinder #6 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 #6. 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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Information for Specific Infiniti Models

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 P0306 Infiniti Code

1. What are common symptoms of OBDII code P0306 in an Infiniti?

- Common symptoms include engine misfire, rough idling, loss of power, and potential increase in fuel consumption.

2. What are the possible causes of a number 6 cylinder misfire in an Infiniti?

- Possible causes include faulty spark plugs, ignition coils, fuel injectors, vacuum leaks, low compression, or issues with the engine control module.

3. How can I diagnose the cause of a number 6 cylinder misfire in my Infiniti?

- Diagnostic steps may include checking spark plugs, inspecting ignition coils, testing fuel injectors, performing a compression test, and scanning the engine control module for codes.

4. Can a dirty fuel injector cause OBDII code P0306 in an Infiniti?

- Yes, a dirty or clogged fuel injector can cause a misfire in the number 6 cylinder, triggering OBDII code P0306.

5. Is it safe to continue driving with OBDII code P0306 in my Infiniti?

- It is not recommended to continue driving with a misfire as it can lead to further damage to the engine and other components. It is best to address the issue promptly.

6. How can I repair OBDII code P0306 in my Infiniti?

- Repair options may include replacing spark plugs, ignition coils, fuel injectors, fixing vacuum leaks, addressing compression issues, or reprogramming the engine control module.

7. Can a bad ignition coil cause OBDII code P0306 in an Infiniti?

- Yes, a faulty ignition coil for the number 6 cylinder can cause a misfire and trigger OBDII code P0306.

8. Will resetting the OBDII code P0306 in my Infiniti make the issue go away?

- Simply resetting the code will not fix the underlying issue causing the misfire. It is important to diagnose and repair the root cause of the problem.

9. How much does it typically cost to repair OBDII code P0306 in an Infiniti?

- The cost of repairs can vary depending on the cause of the misfire and the parts needed. It is advisable to consult with a mechanic for an accurate estimate.

10. Can a misfire in the number 6 cylinder affect the overall performance of my Infiniti?

- Yes, a misfire in one cylinder can lead to decreased performance, reduced fuel efficiency, and potential damage to the catalytic converter over time.

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