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P0455 2011 Nissan Pathfinder Code - EVAP Control System Gross Leak Detected

Quick Answer

The P0455 diagnostic trouble code for a 2011 Nissan Pathfinder indicates that the Evaporative Emission Control System has detected a large leak. Common causes include Loose or damaged gas cap, Cracked or disconnected EVAP system hoses, Faulty EVAP 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
P0455 2011 Nissan Pathfinder indicates EVAP Control System Gross Leak Detected.
Common causes
Common causes include Loose or damaged gas cap, Cracked or disconnected EVAP system hoses, Faulty EVAP 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 Aug 30, 2024
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Code P0455 2011 Nissan Pathfinder Description

The P0455 diagnostic trouble code for a 2011 Nissan Pathfinder indicates that the Evaporative Emission Control System has detected a large leak. This system is responsible for capturing and storing fuel vapors to prevent them from being released into the atmosphere. When a gross leak is detected, it means that there is a significant issue with the system's ability to contain these harmful emissions, leading to increased pollution and potential safety hazards. This code can impact the vehicle's performance by triggering the check engine light, reducing fuel efficiency, and potentially causing the engine to run rough or stall.

OBDII Code P0455 2011 Nissan Pathfinder - EVAP Control System Gross Leak Detected
P0455 2011 Nissan Pathfinder Code - EVAP Control System Gross Leak Detected

Common Causes of P0455 2011 Nissan Pathfinder

  1. Loose or damaged gas cap
  2. Cracked or disconnected EVAP system hoses
  3. Faulty EVAP purge valve
  4. Leaking fuel tank
  5. Faulty EVAP canister or vent valve

Symptoms of P0455 2011 Nissan Pathfinder

  1. Check engine light illuminated
  2. Strong fuel smell near the vehicle
  3. Decreased fuel efficiency
  4. Hissing or hissing noise coming from the fuel tank area
  5. Difficulty starting the vehicle

How to Fix P0455 2011 Nissan Pathfinder

  1. Inspect the gas cap for proper sealing and tighten or replace if necessary.
  2. Check all EVAP system hoses for cracks or disconnections and repair or replace as needed.
  3. Test the EVAP purge valve and replace if faulty.
  4. Check for leaks in the fuel tank and repair as necessary.
  5. Test the EVAP canister and vent valve for proper operation and replace if defective.

Cost to Fix P0455 2011 Nissan Pathfinder

The typical repair costs for addressing a P0455 code on a 2011 Nissan Pathfinder can range from $100 to $500, depending on the specific cause of the issue and the labor rates in your area. Factors such as parts required, diagnostic time, and the complexity of the repair can all impact the final cost. It's recommended to consult with a qualified mechanic or repair shop to get an accurate estimate tailored to your vehicle and location.

What does this mean?

Tech Notes for P0455 2011 Nissan Pathfinder

The P0455 it’s a very common code because the code is set if the gas cap is loose or missing. Start by tightening the gas cap and clearing the code. In most cases, the code can be clear by disconnecting the car battery for about 30 minutes.

There is a factory Nissan service bulletin to help diagnose the P0455 code:
Nissan Factory Service Bulletin OBDII Code P0455

When is the Code Detected?

Malfunction is detected when EVAP control system has a leak, EVAP control system does not operate properly.

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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 P0455 2011 Nissan Pathfinder Code

1. What does the OBDII code P0455 mean on a 2011 Nissan Pathfinder?

P0455 indicates a "Gross Leak Detected" in the EVAP (Evaporative Emission Control) system, meaning there is a large leak or disconnection in the system designed to prevent fuel vapors from escaping into the atmosphere.

2. What are the common symptoms of code P0455 in a 2011 Nissan Pathfinder?

Common symptoms include the check engine light turning on, a possible fuel smell near the vehicle, and in rare cases, a slight drop in fuel efficiency. There are usually no noticeable performance issues.

3. What causes the P0455 code on a 2011 Nissan Pathfinder?

Common causes include a loose or damaged gas cap, a cracked or disconnected EVAP hose, a faulty purge valve, or a damaged charcoal canister.

4. Can a loose gas cap trigger the P0455 code?

Yes, a loose, missing, or damaged gas cap is one of the most common reasons for a P0455 code. Always check the gas cap first before further diagnosis.

5. How do I fix the P0455 code on my 2011 Nissan Pathfinder?

Start by tightening or replacing the gas cap if needed. If the code persists, inspect EVAP system components like hoses, connections, the purge valve, and the charcoal canister for damage or leaks.

6. Is it safe to drive with the P0455 code on my 2011 Nissan Pathfinder?

Yes, it’s generally safe to drive with this code, as it usually doesn’t affect drivability. However, it’s important to address it promptly to avoid increased emissions and potential damage to the EVAP system.

7. How can I diagnose the P0455 code on a 2011 Nissan Pathfinder?

You can perform a visual inspection of the gas cap and EVAP system components for leaks or damage. A smoke test may also be used to locate leaks in the system if no visible issues are found.

8. Can a faulty purge valve cause the P0455 code?

Yes, a malfunctioning purge valve can lead to a gross leak detection, as it may fail to seal properly, allowing fuel vapors to escape.

9. How much does it cost to repair a P0455 code on a 2011 Nissan Pathfinder?

The cost depends on the cause. Replacing a gas cap might cost $20-$50, while repairing EVAP hoses or components could range from $100 to $500, depending on labor and parts.

10. Will clearing the P0455 code solve the problem?

Clearing the code will turn off the check engine light temporarily, but the code will return unless the underlying issue in the EVAP system is fixed.

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