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P0302 2011 Nissan Sentra Code - Number 2 Cylinder Misfire Detected

Quick Answer

When the OBD-II code P0302 appears on a 2011 Nissan Sentra, it indicates that a misfire has been detected in the number 2 cylinder of the engine. Common causes include Faulty spark plug in the number 2 cylinder, Ignition coil failure, 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 2011 Nissan Sentra indicates Number 2 Cylinder Misfire Detected.
Common causes
Common causes include Faulty spark plug in the number 2 cylinder, Ignition coil failure, 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 13, 2024
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Code P0302 2011 Nissan Sentra Description

When the OBD-II code P0302 appears on a 2011 Nissan Sentra, it indicates that a misfire has been detected in the number 2 cylinder of the engine. This means that the cylinder is not firing properly, which can lead to a variety of performance issues. A misfire can cause rough idling, reduced power, decreased fuel efficiency, and potentially even engine damage if left unresolved.

OBDII Code P0302 2011 Nissan Sentra - Number 2 Cylinder Misfire Detected
P0302 2011 Nissan Sentra Code - Number 2 Cylinder Misfire Detected

Common Causes of P0302 2011 Nissan Sentra

  1. Faulty spark plug in the number 2 cylinder
  2. Ignition coil failure
  3. Clogged fuel injector
  4. Vacuum leak in the intake manifold
  5. Low compression in the number 2 cylinder

Symptoms of P0302 2011 Nissan Sentra

  1. Rough idling
  2. Loss of power
  3. Engine vibration
  4. Decreased fuel efficiency
  5. Engine stalling

How to Fix P0302 2011 Nissan Sentra

  1. Begin by inspecting the spark plug in the number 2 cylinder. If it is worn out or damaged, replace it with a new one.
  2. Check the ignition coil for the number 2 cylinder. If it is faulty, replace it to ensure proper spark delivery.
  3. Inspect the fuel injector for the number 2 cylinder. Clean or replace it if necessary to ensure proper fuel delivery.
  4. Check for any vacuum leaks in the intake manifold that may be causing the misfire. Repair or replace any damaged components.
  5. Perform a compression test on the number 2 cylinder to ensure that it is within the manufacturer's specifications. If compression is low, further diagnosis may be needed to identify the root cause.

Cost to Fix P0302 2011 Nissan Sentra

The cost of repairing a P0302 code on a 2011 Nissan Sentra can vary depending on the specific cause of the misfire. On average, the cost of replacing a spark plug ranges from $10 to $30, while an ignition coil replacement can cost between $50 and $200. Cleaning or replacing a fuel injector may cost between $50 and $150. Additionally, diagnosing and repairing vacuum leaks or low compression can add to the overall cost. Labor rates at auto repair shops typically range from $80 to $150 per hour, so it's advisable to check local rates for a more accurate estimate.

What does this mean?

Tech Notes for P0302 2011 Nissan Sentra

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 2011 Nissan Sentra Code

1. What are the common symptoms of OBDII code P0302 (Number 2 Cylinder Misfire Detected) on a 2011 Nissan Sentra?

- Common symptoms include rough idling, loss of power, engine misfires, and potential engine vibrations.

2. What are the possible causes of a P0302 code on a 2011 Nissan Sentra?

- Common causes of a P0302 code include faulty spark plugs, ignition coil issues, vacuum leaks, fuel injector problems, or a malfunctioning engine control module.

3. How can I diagnose the specific cause of the Number 2 cylinder misfire on my 2011 Nissan Sentra?

- Diagnose by checking the spark plugs, ignition coils, fuel injector, vacuum lines, and conducting a compression test to pinpoint the exact issue causing the misfire.

4. Can driving with a P0302 code on a 2011 Nissan Sentra cause further damage to the vehicle?

- Continuing to drive with a misfire can potentially damage the catalytic converter, oxygen sensors, or other engine components, so it's best to address the issue promptly.

5. Is it safe to continue driving my 2011 Nissan Sentra with a P0302 code?

- It's not recommended to drive the vehicle with a misfire as it can lead to decreased fuel efficiency, potential engine damage, and safety hazards.

6. What are some DIY repair tips for fixing a P0302 code on a 2011 Nissan Sentra?

- DIY repair tips include checking and replacing spark plugs, inspecting ignition coils, scanning for vacuum leaks, and ensuring proper fuel injector operation.

7. How much can I expect to pay for professional repairs for a P0302 code on a 2011 Nissan Sentra?

- The cost of professional repairs for a P0302 code can vary but generally ranges from $100 to $500 depending on the specific cause of the misfire and parts needed.

8. How long does it typically take to repair a P0302 code on a 2011 Nissan Sentra?

- The repair time for a P0302 code can range from 1 to 3 hours, depending on the complexity of the issue and the need for parts replacement.

9. Will resetting the OBDII code clear the P0302 code on a 2011 Nissan Sentra?

- Resetting the code may temporarily clear the Check Engine Light, but if the underlying issue causing the misfire is not fixed, the code is likely to reappear.

10. Can a P0302 code on a 2011 Nissan Sentra be triggered by a simple issue like a loose gas cap?

- While a loose gas cap can trigger a different code related to the evaporative emissions system, a P0302 code specifically indicates a misfire in the Number 2 cylinder.

Discuss the causes and fixes for P0302 2011 Nissan Sentra OBDII Code

Submit a New Comment

  • I have change the spark plug number to switch coil wire and now I have random misfire or knock

    Reply to Comment

  • Change spark plugs

    Reply to Comment

  • Usually the problem one or more of the is the ignition coils, but should also perform a compression test, just to make sure you don't have a blown head gasket.

    Reply to Comment