AutoCodes – Nissan – P0306 2011 Nissan Altima Sedan

P0306 2011 Nissan Altima Sedan 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 2011 Nissan Altima Sedan 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 4,731
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 09, 2022
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Code P0306 2011 Nissan Altima Sedan 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 2011 Nissan Altima Sedan - Number 6 Cylinder Misfire Detected - AutoCodes.com
P0306 2011 Nissan Altima Sedan Code - Number 6 Cylinder Misfire Detected

What are the Possible Causes of the DTC P0306 2011 Nissan Altima Sedan?

  • 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 2011 Nissan Altima Sedan?

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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0306 2011 Nissan Altima Sedan 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 P0306 2011 Nissan Altima Sedan 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 P0306 2011 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P0306 (Number 6 Cylinder Misfire Detected) on a 2011 Nissan Altima Sedan?

- Common symptoms include rough idling, engine vibration, loss of power, and potential fuel odor from the exhaust.

2. What are some possible causes of the P0306 code on a 2011 Nissan Altima Sedan?

- Potential causes include faulty spark plugs, ignition coils, fuel injectors, vacuum leaks, low compression in the cylinder, or issues with the engine control module.

3. How can I diagnose the P0306 code on my 2011 Nissan Altima Sedan?

- Diagnose the code by checking the spark plugs, ignition coils, fuel injectors, vacuum lines, and performing a compression test on the number 6 cylinder.

4. Can driving with OBDII code P0306 damage my 2011 Nissan Altima Sedan?

- Driving with a misfiring cylinder can potentially damage the catalytic converter and other engine components over time. It is recommended to address the issue promptly.

5. What are some repair tips for fixing the P0306 code on a 2011 Nissan Altima Sedan?

- Start by inspecting and replacing the spark plugs and ignition coils. If the issue persists, check the fuel injectors and perform a compression test on the cylinder.

6. Is it safe to continue driving my 2011 Nissan Altima Sedan with the P0306 code?

- It is not recommended to drive the vehicle with a misfiring cylinder as it can lead to further damage and decreased performance. Have the issue diagnosed and repaired as soon as possible.

7. How much does it typically cost to repair OBDII code P0306 on a 2011 Nissan Altima Sedan?

- The cost of repairs for a P0306 code can vary depending on the root cause of the misfire. It may range from a simple spark plug replacement to more extensive repairs involving ignition components.

8. Can a DIY enthusiast fix the P0306 code on a 2011 Nissan Altima Sedan?

- Depending on the cause of the misfire, some DIY enthusiasts with automotive experience may be able to address the issue by replacing spark plugs or ignition coils. However, more complex issues may require professional assistance.

9. Will resetting the OBDII code P0306 on a 2011 Nissan Altima Sedan make the issue go away?

- Simply resetting the code without addressing the underlying cause of the misfire will not solve the problem. It is important to diagnose and repair the root issue to prevent the code from reoccurring.

10. How often does the P0306 code occur in 2011 Nissan Altima Sedans?

- The P0306 code, indicating a misfire in the number 6 cylinder, can occur in 2011 Nissan Altima Sedans due to various reasons, including aging components or poor maintenance practices.

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