AutoCodes – Nissan – P0306 2008 Nissan Pathfinder

P0306 2008 Nissan Pathfinder Code - Number 6 Cylinder Misfire Detected

Quick Answer

When a misfire occurs, engine speed will fluctuate. Common causes include Faulty spark plug 6, Clogged or faulty fuel injector 6, Faulty ignition coil 6. 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 2008 Nissan Pathfinder indicates Number 6 Cylinder Misfire Detected.
Common causes: Common causes include Faulty spark plug 6, Clogged or faulty fuel injector 6, Faulty ignition coil 6.
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 6,854

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 P0306 2008 Nissan Pathfinder 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 #6 is misfiring.

OBDII Code P0306 2008 Nissan Pathfinder - Number 6 Cylinder Misfire Detected - AutoCodes.com — P0306 2008 Nissan Pathfinder Code - Number 6 Cylinder Misfire Detected

What does this mean?

What are the Possible Causes of the DTC P0306 2008 Nissan Pathfinder?

Faulty spark plug 6
Clogged or faulty fuel injector 6
Faulty ignition coil 6
Fuel injector 6 harness is open or shorted
Fuel injector 6 circuit poor electrical connection
Ignition coil 6 harness is open or shorted
Ignition coil 6 circuit poor electrical connection
Insufficient cylinder 6 compression
Incorrect fuel pressure
Intake air leak

How to Fix the DTC P0306 2008 Nissan Pathfinder?

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 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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0306 2008 Nissan Pathfinder 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 P0306 2008 Nissan Pathfinder Code

1. What does the OBDII code P0306 mean on a 2008 Nissan Pathfinder?

P0306 indicates a misfire has been detected specifically in cylinder number 6.

2. What are the symptoms of a P0306 code in a 2008 Nissan Pathfinder?

Symptoms may include rough engine idle, poor acceleration, reduced fuel efficiency, engine hesitation, and the Check Engine Light being illuminated.

3. What causes a P0306 code in a 2008 Nissan Pathfinder?

Common causes include a faulty spark plug in cylinder 6, a bad ignition coil, a clogged fuel injector, low compression, or a vacuum leak near cylinder 6.

4. Can a P0306 code damage the engine if left unresolved?

Yes, prolonged driving with a misfire can damage the catalytic converter and potentially cause further engine damage over time.

5. How do I diagnose a P0306 code on a 2008 Nissan Pathfinder?

Start by inspecting the spark plug, ignition coil, and injector for cylinder 6. Then, check for vacuum leaks, perform a compression test, and verify proper fuel pressure.

6. Is it safe to drive with a P0306 code on a 2008 Nissan Pathfinder?

Driving with this code is not recommended, as it can lead to reduced performance, increased emissions, and potential engine damage.

7. How do I fix a P0306 code in a 2008 Nissan Pathfinder?

Repairs typically include replacing the spark plug or ignition coil for cylinder 6, cleaning or replacing the fuel injector, sealing vacuum leaks, or addressing compression issues.

8. What tools are needed to fix a P0306 code?

Basic tools include a spark plug socket, ignition coil removal tools, a fuel injector cleaner kit, a compression tester, and an OBDII scanner.

9. How much does it cost to repair a P0306 code on a 2008 Nissan Pathfinder?

The cost varies depending on the issue. Replacing a spark plug or ignition coil may cost $100â€“$300, while more complex repairs like fixing a compression issue could exceed $1,000.

10. Can a dirty air filter cause a P0306 code?

While a dirty air filter can affect engine performance, it is unlikely to cause a misfire in a specific cylinder like P0306. Focus on cylinder 6 components for diagnosis.