Engine-Codes.com
Engine-Codes – Nissan – P0456 2007 Nissan Maxima

P0456 2007 Nissan Maxima Code - Evaporative Emission Control System Very Small Leak Detected

Quick Answer

The P0456 code on a 2007 Nissan Maxima indicates that the evaporative emission control system has detected a very small leak in the system. Common causes include Loose or damaged gas cap, Leak in the fuel tank or fuel lines, Faulty purge valve. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means
P0456 2007 Nissan Maxima indicates Evaporative Emission Control System Very Small Leak Detected.
Common causes
Common causes include Loose or damaged gas cap, Leak in the fuel tank or fuel lines, Faulty purge valve.
Severity
Low - monitor the vehicle and repair when practical.
Can I drive?
The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P0456 2007 Nissan Maxima Description

The P0456 code on a 2007 Nissan Maxima indicates that the evaporative emission control system has detected a very small leak in the system. The evaporative emission control system is responsible for capturing and storing fuel vapors that would otherwise be released into the atmosphere. When a very small leak is detected, it means that there is a potential issue with the system's ability to contain these harmful vapors.

OBDII Code P0456 2007 Nissan Maxima - Evaporative Emission Control System Very Small Leak Detected
P0456 2007 Nissan Maxima Code - Evaporative Emission Control System Very Small Leak Detected

Common Causes of P0456 2007 Nissan Maxima

  1. Loose or damaged gas cap
  2. Leak in the fuel tank or fuel lines
  3. Faulty purge valve
  4. Cracked charcoal canister

Symptoms of P0456 2007 Nissan Maxima

  1. Check engine light illuminated
  2. Smell of fuel vapors near the vehicle
  3. Decreased fuel efficiency
  4. Failed emissions test

How to Fix P0456 2007 Nissan Maxima

  1. Inspect the gas cap and ensure it is properly tightened or replace it if damaged.
  2. Check for leaks in the fuel tank and fuel lines, repairing or replacing any damaged components.
  3. Test the purge valve for proper operation and replace if necessary.
  4. Inspect the charcoal canister for cracks or damage and replace if needed.
  5. Clear the diagnostic trouble codes and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0456 2007 Nissan Maxima

The cost of repairing a P0456 code on a 2007 Nissan Maxima can vary depending on the specific cause of the issue. In general, the cost of parts for this repair could range from $50 to $200, with labor costs adding an additional $100 to $200. Overall, the total cost of the repair could range from $150 to $400, but it's important to note that these are rough estimates and actual costs may vary. Factors such as the location of the repair shop, the make and model of the vehicle, and the severity of the issue can all impact the final cost. It's recommended to consult with a trusted auto repair shop for a more accurate estimate based on your specific circumstances.

What does this mean?

Tech Notes for P0456 2007 Nissan Maxima

The fuel tank filler cap and the Purge Volume Control Valve are the more common problems that will trigger the P0456 code on Nissan vehicles.



There is a factory Nissan service bulletin to help diagnose the P0456 code:

Nissan Factory Service Bulletin OBDII Code P0456

When is the Code Detected?

Malfunction is detected when Evaporative Emission (EVAP) control system has a very small leak, EVAP control system does not operate properly.

Need more information about the P0456 2007 Nissan Maxima code?

Need more information on how to fix the P0456 2007 Nissan Maxima code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0456 2007 Nissan Maxima code diagnosed by a professional: Find a repair shop in your area

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 P0456 2007 Nissan Maxima Code

1. What does OBDII code P0456 on a 2007 Nissan Maxima mean?

This code indicates that the Evaporative Emission Control System has detected a very small leak.

2. What are common symptoms of a P0456 code in a 2007 Nissan Maxima?

Common symptoms include the check engine light coming on, a strong fuel odor, and potential issues with passing emissions tests.

3. What are possible causes of a P0456 code in a 2007 Nissan Maxima?

Potential causes include a loose or damaged gas cap, a cracked or damaged EVAP system hose, a faulty EVAP canister, or a malfunctioning purge valve.

4. How can I diagnose the source of a P0456 code in a 2007 Nissan Maxima?

Diagnosing the issue may involve visually inspecting the EVAP system components, checking for a tight seal on the gas cap, and using a smoke machine to detect leaks in the system.

5. Can I continue driving my 2007 Nissan Maxima with a P0456 code?

While the vehicle may still be driveable, it is recommended to address the issue promptly to prevent potential damage to the engine and to ensure compliance with emissions regulations.

6. How can I repair a P0456 code in a 2007 Nissan Maxima?

Repair options may include tightening or replacing the gas cap, repairing or replacing damaged hoses, replacing the EVAP canister or purge valve, and clearing the code with a diagnostic tool.

7. Will a P0456 code reset itself on a 2007 Nissan Maxima?

In some cases, the code may reset itself after the underlying issue has been resolved and the vehicle has gone through several drive cycles without the problem reoccurring.

8. How much does it typically cost to fix a P0456 code on a 2007 Nissan Maxima?

The cost of repairs can vary depending on the specific cause of the code and whether you plan to address the issue yourself or take your vehicle to a mechanic. Costs can range from a few dollars for a new gas cap to a few hundred dollars for more extensive repairs.

9. Can a P0456 code be triggered by other issues unrelated to the EVAP system on a 2007 Nissan Maxima?

While the code is typically associated with the EVAP system, other factors such as a faulty oxygen sensor or fuel injector issues could potentially trigger a P0456 code as well.

10. How often should I check for a P0456 code on my 2007 Nissan Maxima?

It is a good practice to regularly check for any trouble codes, including P0456, by using an OBDII scanner, especially if you notice any unusual symptoms or changes in your vehicle's performance.

Discuss the causes and fixes for P0456 2007 Nissan Maxima OBDII Code

Submit a New Comment

Code P0456 2007 Nissan Maxima comments

No comments found for this page.