AutoCodes – Nissan – P0302 2010 Nissan Sentra

P0302 2010 Nissan Sentra Code - Number 2 Cylinder Misfire Detected

Quick Answer

When a misfire occurs, engine speed will fluctuate. Common causes include Faulty Spark Plug #2, Clogged or faulty Fuel Injector #2, Faulty Ignition Coil #2. 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 2010 Nissan Sentra indicates Number 2 Cylinder Misfire Detected.
Common causes: Common causes include Faulty Spark Plug #2, Clogged or faulty Fuel Injector #2, Faulty Ignition Coil #2.
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.

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Code Popularity 6,343

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 08, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0302 2010 Nissan Sentra Description

When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the Crankshaft Position (CKP) sensor signal to vary, the Engine Control Module (ECM) can determine that a misfire is occurring. The Diagnostic Trouble Code (DTC) will be set when the Engine Control Module monitors the crankshaft speed and has detected that engine cylinder #2 is misfiring.

OBDII Code P0302 2010 Nissan Sentra - Number 2 Cylinder Misfire Detected - AutoCodes.com — P0302 2010 Nissan Sentra Code - Number 2 Cylinder Misfire Detected

What does this mean?

What are the Possible Causes of the DTC P0302 2010 Nissan Sentra?

Faulty Spark Plug #2
Clogged or faulty Fuel Injector #2
Faulty Ignition Coil #2
Fuel Injector #2 harness is open or shorted
Fuel Injector #2 circuit poor electrical connection
Ignition Coil #2 harness is open or shorted
Ignition Coil #2 circuit poor electrical connection
Insufficient cylinder 2 compression
Incorrect fuel pressure
Intake air leak

How to Fix the DTC P0302 2010 Nissan Sentra?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0302 2010 Nissan Sentra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0302 2010 Nissan Sentra code?

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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 2010 Nissan Sentra Code

1. What are the common symptoms of an OBDII code P0302 on a 2010 Nissan Sentra?

- Common symptoms include rough idling, loss of power, engine misfires, and possibly a noticeable decrease in fuel efficiency.

2. What are the possible causes of the P0302 code on a 2010 Nissan Sentra?

- The code P0302 indicates a misfire in the number 2 cylinder, which could be caused by issues such as a faulty spark plug, ignition coil, fuel injector, vacuum leak, or low compression.

3. How can I diagnose the cause of a number 2 cylinder misfire in my 2010 Nissan Sentra?

- To diagnose the issue, you can start by checking the spark plugs, ignition coils, fuel injectors, and vacuum lines related to the number 2 cylinder. Performing a compression test may also help identify any internal engine problems.

4. Can driving with a P0302 code on a 2010 Nissan Sentra cause further damage?

- Continuing to drive with a misfiring cylinder can potentially damage the catalytic converter and other engine components. It is recommended to address the issue promptly to prevent further damage.

5. How can I repair a number 2 cylinder misfire on my 2010 Nissan Sentra?

- Repairing a P0302 code may involve replacing the spark plugs, ignition coils, fuel injectors, or addressing any vacuum leaks or compression issues specific to the number 2 cylinder.

6. Is it safe to continue driving my 2010 Nissan Sentra with a P0302 code?

- It is generally not recommended to drive with a misfiring cylinder as it can lead to further engine damage and potential safety hazards. It's best to address the issue as soon as possible.

7. Can a dirty fuel injector cause a P0302 code on a 2010 Nissan Sentra?

- Yes, a dirty or clogged fuel injector can result in a misfire in the number 2 cylinder, triggering the P0302 trouble code on a 2010 Nissan Sentra.

8. Will resetting the OBDII code make the issue go away?

- Resetting the OBDII code may temporarily clear the check engine light, but it will not fix the underlying issue causing the misfire in the number 2 cylinder. The problem should be diagnosed and repaired to prevent recurrence.

9. How much does it cost to repair a P0302 code on a 2010 Nissan Sentra?

- The cost of repairing a P0302 code can vary depending on the exact cause of the misfire and the parts and labor required. It's best to consult a mechanic for a specific estimate based on your vehicle's condition.

10. Can bad gasoline quality contribute to a number 2 cylinder misfire on a 2010 Nissan Sentra?

- Poor quality or contaminated gasoline can potentially lead to misfires in the engine, including the number 2 cylinder. Using high-quality fuel and addressing any fuel system issues can help prevent such misfires.