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P0455 2008 Nissan Pathfinder Code - EVAP Control System Gross Leak Detected

Quick Answer

The P0455 code for a 2008 Nissan Pathfinder indicates that the vehicle's onboard diagnostic system has detected a large leak in the evaporative emission control system (EVAP). Common causes include Loose or damaged gas cap, Cracked or disconnected EVAP hoses, 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
P0455 2008 Nissan Pathfinder indicates EVAP Control System Gross Leak Detected.
Common causes
Common causes include Loose or damaged gas cap, Cracked or disconnected EVAP hoses, 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 16, 2024
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Code P0455 2008 Nissan Pathfinder Description

The P0455 code for a 2008 Nissan Pathfinder indicates that the vehicle's onboard diagnostic system has detected a large leak in the evaporative emission control system (EVAP). The EVAP system is responsible for capturing and storing fuel vapors from the fuel tank to prevent them from escaping into the atmosphere. A gross leak in this system can lead to increased emissions, decreased fuel efficiency, and potential safety hazards.

OBDII Code P0455 2008 Nissan Pathfinder - EVAP Control System Gross Leak Detected
P0455 2008 Nissan Pathfinder Code - EVAP Control System Gross Leak Detected

Common Causes of P0455 2008 Nissan Pathfinder

  1. Loose or damaged gas cap
  2. Cracked or disconnected EVAP hoses
  3. Faulty purge valve
  4. Damaged charcoal canister
  5. Leaking EVAP system components

Symptoms of P0455 2008 Nissan Pathfinder

  1. Check Engine Light illuminated
  2. Strong fuel odor near the vehicle
  3. Decreased fuel efficiency
  4. Hissing or whistling noise from the fuel tank area
  5. Difficulty starting the engine

How to Fix P0455 2008 Nissan Pathfinder

  1. Inspect the gas cap: Check if the gas cap is loose, damaged, or missing. Replace if necessary.
  2. Inspect EVAP hoses: Check all EVAP hoses for cracks, leaks, or disconnections. Repair or replace damaged hoses.
  3. Test purge valve: Test the purge valve to ensure it is functioning properly. Replace if faulty.
  4. Inspect charcoal canister: Check the charcoal canister for damage or leaks. Replace if necessary.
  5. Clear the code: After completing repairs, clear the diagnostic trouble code using a scan tool to reset the Check Engine Light.

Cost to Fix P0455 2008 Nissan Pathfinder

The cost of repairing a P0455 code on a 2008 Nissan Pathfinder can vary depending on the specific cause of the issue. On average, the cost of parts for this repair can range from $50 to $300, while labor costs can range from $100 to $200. Overall, the total repair cost can be estimated to be between $150 and $500. It's important to note that labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.

What does this mean?

Tech Notes for P0455 2008 Nissan Pathfinder

The P0455 it’s 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



Nissan models with factory service bulletin for the 2005 Nissan Pathfinder:

2005-2007 Nissan Pathfinder 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.

Need more information about the P0455 2008 Nissan Pathfinder code?

Need more information on how to fix the P0455 2008 Nissan Pathfinder code? Get Access to Factory Service Manuals

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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 2008 Nissan Pathfinder Code

1. What does OBDII code P0455 mean on a 2008 Nissan Pathfinder?

P0455 indicates a "Gross Leak Detected" in the EVAP (Evaporative Emission Control) system, meaning there is a large leak or a complete disconnection in the system.

2. What are the common symptoms of code P0455 in a 2008 Nissan Pathfinder?

The most common symptoms include the check engine light turning on, a possible fuel odor near the vehicle, and no noticeable performance issues in most cases.

3. What causes the P0455 code to appear on a 2008 Nissan Pathfinder?

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

4. Can a loose gas cap trigger code P0455 in a 2008 Nissan Pathfinder?

Yes, a loose, damaged, or missing gas cap is one of the most common reasons for this code.

5. How do I diagnose the P0455 code on my 2008 Nissan Pathfinder?

Start by checking the gas cap for damage or looseness. If the gas cap is fine, inspect EVAP hoses for cracks or disconnections and use a smoke test to locate leaks.

6. Can I drive my 2008 Nissan Pathfinder with a P0455 code?

Yes, the vehicle is usually safe to drive, but prolonged driving without addressing the issue can lead to increased emissions and potential damage to the EVAP system.

7. How do I fix the P0455 code on a 2008 Nissan Pathfinder?

Common fixes include tightening or replacing the gas cap, repairing or replacing damaged EVAP hoses, or replacing faulty components like the purge valve or charcoal canister.

8. How much does it cost to fix code P0455 on a 2008 Nissan Pathfinder?

The cost varies depending on the issue. Replacing a gas cap costs $10–$30, while repairing EVAP hoses or replacing a purge valve or charcoal canister can cost $100–$600.

9. Will clearing the P0455 code solve the problem permanently?

No, clearing the code will only temporarily turn off the check engine light. The underlying issue must be resolved to prevent the code from returning.

10. How can I prevent the P0455 code from recurring on my 2008 Nissan Pathfinder?

Ensure the gas cap is properly tightened after refueling, inspect EVAP components regularly for damage, and address any fuel system issues promptly.

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