AutoCodes – Nissan – P0456 2010 Nissan Pathfinder

P0456 2010 Nissan Pathfinder Code - Evaporative Emission Control System Very Small Leak Detected

Quick Answer

This diagnosis detects leaks in the Evaporative Emission System (EVAP) purge line using engine intake manifold vacuum. Common causes include Missing or loose fuel cap, Incorrect fuel filler cap used, Fuel filler cap remains open or fails to close. 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 2010 Nissan Pathfinder indicates Evaporative Emission Control System Very Small Leak Detected.
Common causes: Common causes include Missing or loose fuel cap, Incorrect fuel filler cap used, Fuel filler cap remains open or fails to close.
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.

Save to My Repairs Step-by-Step Diagnostic Guide My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 5,740

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 25, 2024

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0456 2010 Nissan Pathfinder Description

This diagnosis detects leaks in the Evaporative Emission System (EVAP) purge line using engine intake manifold vacuum. If pressure does not increase, the Engine Control Module (ECM) will check for leaks in the line between the fuel tank and EVAP canister purge volume control solenoid valve under the following vacuum test condition.
The vacuum cut valve bypass valve is opened to clear the line between the fuel tank and the EVAP canister purge volume control solenoid valve. The EVAP canister vent control valve will then be closed to shut the EVAP purge line off. The EVAP canister purge volume control solenoid valve is opened to depressurize the EVAP purge line using intake manifold vacuum. After this depressurization is implemented, the EVAP canister purge volume control solenoid valve will be closed.

OBDII Code P0456 2010 Nissan Pathfinder - Evaporative Emission Control System Very Small Leak Detected - AutoCodes.com — P0456 2010 Nissan Pathfinder Code - Evaporative Emission Control System Very Small Leak Detected

What does this mean?

What are the Possible Causes of the DTC P0456 2010 Nissan Pathfinder?

Missing or loose fuel cap
Incorrect fuel filler cap used
Fuel filler cap remains open or fails to close
Foreign matter caught in fuel filler cap
Evaporative Emission (EVAP) canister or fuel tank leaks
Evaporative Emission (EVAP) system hose leaking
Fuel tank leaking

How to Fix the DTC P0456 2010 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 fuel tank filler cap and the Purge Volume Control Valve are the more common problems that will trigger the P0456 code on Nissan vehicles.

All Nissan Models 2008 and newer Service Bulletin OBDII Code P0456:
All Nissan Models 2008 and newer Service Bulletin OBDII Code P0456

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0456 2010 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.

Need more information about the P0456 2010 Nissan Pathfinder code?

Need more information on how to fix the P0456 2010 Nissan Pathfinder code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0456 2010 Nissan Pathfinder 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 2010 Nissan Pathfinder Code

1. What are the common symptoms of OBDII code P0456 in a 2010 Nissan Pathfinder?

The common symptoms of code P0456 include the illumination of the check engine light on the dashboard and potential smell of fuel vapors around the vehicle.

2. What could be the possible causes of OBDII code P0456 in a 2010 Nissan Pathfinder?

Possible causes of code P0456 in a 2010 Nissan Pathfinder could be a loose or damaged gas cap, a leak in the fuel tank or fuel system, a malfunctioning EVAP system purge valve, or a faulty EVAP canister.

3. How serious is OBDII code P0456 in a 2010 Nissan Pathfinder?

Although code P0456 typically indicates a minor evaporative emission system leak, it is important to address it promptly to prevent potential issues with the vehicle's emissions control system and to ensure proper fuel efficiency.

4. Can I continue driving my 2010 Nissan Pathfinder with OBDII code P0456?

It is generally safe to drive your vehicle with code P0456, but it is recommended to have the issue diagnosed and repaired by a qualified mechanic to prevent any adverse effects on the vehicle's emissions control system.

5. How can I diagnose the cause of OBDII code P0456 in my 2010 Nissan Pathfinder?

Diagnosing code P0456 may involve checking the gas cap for tightness, inspecting the fuel system and EVAP components for leaks, and using a scan tool to monitor the EVAP system's operation for any irregularities.

6. What are some repair tips for fixing OBDII code P0456 in a 2010 Nissan Pathfinder?

Repair tips for code P0456 may include ensuring the gas cap is properly tightened, inspecting and repairing any damaged hoses or components in the EVAP system, and clearing the code with a diagnostic scan tool after the repairs are completed.

7. How much does it typically cost to repair OBDII code P0456 in a 2010 Nissan Pathfinder?

The cost of repairing code P0456 in a 2010 Nissan Pathfinder can vary depending on the specific cause of the issue. It may range from a simple gas cap replacement to more extensive repairs involving the EVAP system components.

8. Can a DIY enthusiast fix OBDII code P0456 in a 2010 Nissan Pathfinder?

While some aspects of diagnosing and repairing code P0456 may be within reach of a skilled DIY enthusiast, it is recommended to consult a professional mechanic for an accurate diagnosis and proper repair of the issue to ensure the vehicle's optimal performance.

9. How long does it take to repair OBDII code P0456 in a 2010 Nissan Pathfinder?

The time required to repair code P0456 in a 2010 Nissan Pathfinder can vary depending on the cause of the issue and the extent of repairs needed. Simple fixes like tightening the gas cap may take a short time, while more complex repairs could require several hours or more.

10. Will OBDII code P0456 cause my 2010 Nissan Pathfinder to fail an emissions test?

If left unresolved, code P0456 could potentially cause your 2010 Nissan Pathfinder to fail an emissions test due to increased emissions from the evaporative system leak. It is advisable to address the issue before undergoing an emissions test to ensure compliance.