AutoCodes – Infiniti – P0302 2006 Infiniti G35

P0302 2006 Infiniti G35 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 2006 Infiniti G35 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 4,080

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 Mar 29, 2024

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0302 2006 Infiniti G35 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 2006 Infiniti G35 - Number 2 Cylinder Misfire Detected - AutoCodes.com — P0302 2006 Infiniti G35 Code - Number 2 Cylinder Misfire Detected

What does this mean?

What are the Possible Causes of the DTC P0302 2006 Infiniti G35?

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 2006 Infiniti G35?

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 2006 Infiniti G35 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.

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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 2006 Infiniti G35 Code

1. What does OBDII code P0302 mean for a 2006 Infiniti G35?

- OBDII code P0302 indicates a misfire in the number 2 cylinder of the engine in a 2006 Infiniti G35.

2. What are common symptoms of a number 2 cylinder misfire in a 2006 Infiniti G35?

- Common symptoms of a number 2 cylinder misfire include rough idling, loss of power, engine vibrations, and potentially increased fuel consumption.

3. What are possible causes of a number 2 cylinder misfire in a 2006 Infiniti G35?

- Potential causes of a number 2 cylinder misfire include faulty spark plugs, ignition coils, fuel injectors, vacuum leaks, or issues with the engine's compression.

4. How can I diagnose the cause of a number 2 cylinder misfire in my 2006 Infiniti G35?

- Diagnosing the cause of the misfire may involve checking spark plugs, ignition coils, fuel injectors, vacuum lines, and performing a compression test to pinpoint the issue.

5. Can driving with a number 2 cylinder misfire in a 2006 Infiniti G35 cause further damage?

- Driving with a misfire can potentially lead to damage to the catalytic converter, oxygen sensors, or other engine components over time, so it is best to address the issue promptly.

6. How can I repair a number 2 cylinder misfire in my 2006 Infiniti G35?

- Repairing a number 2 cylinder misfire may involve replacing faulty spark plugs, ignition coils, fuel injectors, or addressing any vacuum leaks or compression issues as needed.

7. Is it safe to continue driving my 2006 Infiniti G35 with a number 2 cylinder misfire?

- While it may be possible to drive with a misfire for a short distance, it is not recommended as it can lead to further damage and potentially unsafe driving conditions.

8. How much does it typically cost to repair a number 2 cylinder misfire in a 2006 Infiniti G35?

- The cost of repairing a number 2 cylinder misfire can vary depending on the underlying cause and the parts and labor required, but it is advisable to budget for diagnostic costs and potential component replacements.

9. Can a DIY enthusiast fix a number 2 cylinder misfire in a 2006 Infiniti G35?

- Depending on their skill level and access to tools, a DIY enthusiast may be able to address a number 2 cylinder misfire by replacing spark plugs, ignition coils, or other components, but complex issues may require professional assistance.

10. How often does a number 2 cylinder misfire occur in a 2006 Infiniti G35?

- Number 2 cylinder misfires can occur due to various reasons, and while they may not be common, they are a known issue that can affect the performance and reliability of the vehicle.