AutoCodes – Nissan – P0305 Nissan

P0305 Nissan Code - Number 5 Cylinder Misfire Detected

Quick Answer

When a misfire occurs, engine speed will fluctuate. Common causes include Faulty spark plug 5, Clogged or faulty fuel injector 5, Faulty ignition coil 5. 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: P0305 Nissan indicates Number 5 Cylinder Misfire Detected.
Common causes: Common causes include Faulty spark plug 5, Clogged or faulty fuel injector 5, Faulty ignition coil 5.
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 42,677

How popular is this code, among other codes? Medium

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 09, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0305 Nissan 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 #5 is misfiring.

OBDII Code P0305 Nissan - Number 5 Cylinder Misfire Detected - AutoCodes.com — P0305 Nissan Code - Number 5 Cylinder Misfire Detected

What does this mean?

What are the Possible Causes of the DTC P0305 Nissan?

Faulty spark plug 5
Clogged or faulty fuel injector 5
Faulty ignition coil 5
Fuel injector 5 harness is open or shorted
Fuel injector 5 circuit poor electrical connection
Ignition coil 5 harness is open or shorted
Ignition coil 5 circuit poor electrical connection
Insufficient cylinder 5 compression
Incorrect fuel pressure
Intake air leak

How to Fix the DTC P0305 Nissan?

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 P0305 code means that cylinder #5 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 #5. 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 P0305 Nissan 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 P0305 Nissan code?

Need more information on how to fix the P0305 Nissan code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0305 Nissan code diagnosed by a professional: Find a repair shop in your area

Information for Specific Nissan Models

P0305 2002 Nissan Altima Sedan — Number 5 Cylinder Misfire Detected
P0305 2003 Nissan Altima Sedan — Number 5 Cylinder Misfire Detected
P0305 2004 Nissan Altima Sedan — Number 5 Cylinder Misfire Detected
P0305 2005 Nissan Altima Sedan — Number 5 Cylinder Misfire Detected
P0305 2006 Nissan Altima Sedan — Number 5 Cylinder Misfire Detected
P0305 2008 Nissan Altima Sedan — Number 5 Cylinder Misfire Detected
P0305 2009 Nissan Altima Sedan — Number 5 Cylinder Misfire Detected
P0305 2010 Nissan Altima Sedan — Number 5 Cylinder Misfire Detected
P0305 2011 Nissan Altima Sedan — Number 5 Cylinder Misfire Detected
P0305 2012 Nissan Altima Sedan — Number 5 Cylinder Misfire Detected
P0305 2004 Nissan Maxima — Number 5 Cylinder Misfire Detected
P0305 2005 Nissan Maxima — Number 5 Cylinder Misfire Detected
P0305 2006 Nissan Maxima — Number 5 Cylinder Misfire Detected
P0305 2007 Nissan Maxima — Number 5 Cylinder Misfire Detected
P0305 2008 Nissan Maxima — Number 5 Cylinder Misfire Detected
P0305 2005 Nissan Pathfinder — Number 5 Cylinder Misfire Detected
P0305 2006 Nissan Pathfinder — Number 5 Cylinder Misfire Detected
P0305 2007 Nissan Pathfinder — Number 5 Cylinder Misfire Detected
P0305 2008 Nissan Pathfinder — Number 5 Cylinder Misfire Detected
P0305 2009 Nissan Pathfinder — Number 5 Cylinder Misfire Detected
P0305 2010 Nissan Pathfinder — Number 5 Cylinder Misfire Detected
P0305 2011 Nissan Pathfinder — Number 5 Cylinder Misfire Detected
P0305 2012 Nissan Pathfinder — Number 5 Cylinder Misfire Detected

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 P0305 Nissan Code

1. What are the common symptoms of OBDII code P0305 in a Nissan, indicating a misfire in the number 5 cylinder?

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

2. What are the typical causes of a number 5 cylinder misfire detected in a Nissan, triggering the P0305 code?

- Causes may include faulty spark plugs, ignition coils, fuel injectors, vacuum leaks, low compression, or issues with the engine control module.

3. How can I diagnose the specific cause of the number 5 cylinder misfire in my Nissan when experiencing the P0305 code?

- Diagnostic steps may involve checking spark plugs, ignition coils, fuel injectors, vacuum lines, performing a compression test, and scanning for additional fault codes.

4. Can driving with OBDII code P0305 in a Nissan be harmful to the engine?

- Continuing to drive with a misfire can potentially damage the catalytic converter over time and may lead to further engine problems if left unresolved.

5. Are there any quick repair tips for addressing the P0305 code related to a number 5 cylinder misfire in a Nissan?

- Quick tips may include starting with the simplest checks like inspecting spark plugs and ignition coils, ensuring proper fuel delivery, and looking for visible vacuum leaks.

6. Is it safe to reset the OBDII code P0305 in a Nissan after addressing the number 5 cylinder misfire issue?

- It is recommended to clear the code after fixing the underlying problem, but be sure to test drive the vehicle and monitor for any reoccurrence of the misfire.

7. How much does it typically cost to repair the number 5 cylinder misfire detected in a Nissan causing the P0305 code?

- Repair costs can vary depending on the exact cause of the misfire, but expenses may range from a simple spark plug replacement to more complex repairs involving ignition components.

8. Can a DIY enthusiast with basic mechanical skills fix the number 5 cylinder misfire triggering the P0305 code in a Nissan?

- Depending on the cause, some DIYers may be able to address the issue by replacing spark plugs, ignition coils, or performing basic diagnostic checks, but more complex problems may require professional assistance.

9. Will the OBDII code P0305 disappear on its own after fixing the number 5 cylinder misfire in a Nissan?

- After successfully resolving the misfire issue, driving the vehicle for a certain period without experiencing any further problems should eventually clear the code from the system.

10. How often should I expect a number 5 cylinder misfire causing the P0305 code to occur in a Nissan?

- While misfires can happen due to various reasons, they are not a common occurrence in well-maintained vehicles. Regular maintenance and prompt attention to any engine issues can help prevent such problems.