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P0302 2012 Nissan Pathfinder Code - Number 2 Cylinder Misfire Detected

Quick Answer

When the diagnostic trouble code P0302 appears on a 2012 Nissan Pathfinder, it indicates that there is a misfire detected in the number 2 cylinder of the engine. Common causes include Faulty ignition coil, Worn spark plugs, 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
P0302 2012 Nissan Pathfinder indicates Number 2 Cylinder Misfire Detected.
Common causes
Common causes include Faulty ignition coil, Worn spark plugs, 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 10, 2024
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Code P0302 2012 Nissan Pathfinder Description

When the diagnostic trouble code P0302 appears on a 2012 Nissan Pathfinder, it indicates that there is a misfire detected in the number 2 cylinder of the engine. This means that the cylinder is not firing properly, leading to a lack of power, rough idling, decreased fuel efficiency, and potential damage to the engine over time if not addressed promptly. A misfire can be caused by a variety of issues, including ignition system problems, fuel delivery issues, vacuum leaks, or mechanical problems within the engine itself.

OBDII Code P0302 2012 Nissan Pathfinder - Number 2 Cylinder Misfire Detected
P0302 2012 Nissan Pathfinder Code - Number 2 Cylinder Misfire Detected

Common Causes of P0302 2012 Nissan Pathfinder

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

Symptoms of P0302 2012 Nissan Pathfinder

  1. Loss of power or acceleration
  2. Rough idling or vibrations
  3. Engine misfires or hesitation
  4. Decreased fuel efficiency
  5. Illumination of the check engine light

How to Fix P0302 2012 Nissan Pathfinder

  1. Diagnose the specific cause of the misfire by performing a compression test, checking the ignition system, inspecting spark plugs, and examining fuel injectors.
  2. Replace faulty ignition coil, worn spark plugs, or clogged fuel injector.
  3. Repair any vacuum leaks in the intake system.
  4. Perform a compression test and address any issues with low compression in the number 2 cylinder.
  5. Clear the diagnostic trouble code and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0302 2012 Nissan Pathfinder

The cost of repairing a number 2 cylinder misfire on a 2012 Nissan Pathfinder can vary depending on the specific cause of the issue and the cost of parts and labor in your area. Generally, the cost of replacing an ignition coil, spark plugs, or a fuel injector can range from $100 to $300 per part, while labor costs can add an additional $100 to $200. Overall, you can expect to pay anywhere from $200 to $800 for the repair, including parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can vary, so it's recommended to obtain quotes from multiple sources before proceeding with the repair.

What does this mean?

Tech Notes for P0302 2012 Nissan Pathfinder

The P0302 code means that cylinder #2 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 #2. 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 P0302 2012 Nissan Pathfinder Code

1. What are the common symptoms of OBDII code P0302 (Number 2 Cylinder Misfire Detected) in a 2012 Nissan Pathfinder?

- Common symptoms include rough idling, loss of power, engine vibration, and potentially increased fuel consumption.

2. What are the typical causes of a P0302 code in a 2012 Nissan Pathfinder?

- The code P0302 usually indicates a misfire in the number 2 cylinder, which can be caused by issues such as faulty spark plugs, ignition coils, fuel injectors, or a vacuum leak.

3. How can I diagnose the cause of a P0302 code in my 2012 Nissan Pathfinder?

- Diagnosing the issue involves checking the number 2 cylinder spark plug, ignition coil, fuel injector, and vacuum lines for any signs of damage or malfunction.

4. Can driving with a P0302 code in a 2012 Nissan Pathfinder cause further damage to the engine?

- Continuing to drive with a misfire can potentially cause damage to the catalytic converter and other engine components over time, so it's best to address the issue promptly.

5. Are there any simple repairs I can try to fix a P0302 code in my 2012 Nissan Pathfinder?

- You can start by replacing the spark plugs and ignition coils for the number 2 cylinder, as these are common culprits for misfires.

6. How much does it typically cost to repair a P0302 code in a 2012 Nissan Pathfinder?

- The cost of repairing a P0302 code can vary depending on the exact cause of the misfire, but it may range from a few hundred dollars for basic repairs to more if additional parts need replacement.

7. Can a dirty air filter cause a P0302 code in a 2012 Nissan Pathfinder?

- While a dirty air filter can affect engine performance, it is less likely to directly cause a specific cylinder misfire indicated by the P0302 code.

8. Is it safe to drive my 2012 Nissan Pathfinder with a flashing check engine light due to a P0302 code?

- A flashing check engine light indicates a severe misfire that can potentially damage the catalytic converter. It's recommended to avoid driving the vehicle and have it checked by a mechanic as soon as possible.

9. Will resetting the OBDII system clear a P0302 code in a 2012 Nissan Pathfinder?

- Resetting the system may temporarily clear the code, but if the underlying issue causing the misfire is not addressed, the code is likely to reappear after driving the vehicle again.

10. How long does it take to repair a P0302 code in a 2012 Nissan Pathfinder?

- The repair time for a P0302 code can vary depending on the exact cause of the misfire and the complexity of the repair needed. It can range from a quick fix to a more involved diagnostic and repair process.

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