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Engine-Codes – Nissan – P0455 2009 Nissan Altima Sedan

P0455 2009 Nissan Altima Sedan Code - EVAP Control System Gross Leak Detected

Quick Answer

The P0455 code for a 2009 Nissan Altima Sedan indicates that the Evaporative Emission Control System has detected a gross leak. Common causes include Loose, damaged, or missing gas cap, Cracked or damaged EVAP system hose, 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 2009 Nissan Altima Sedan indicates EVAP Control System Gross Leak Detected.
Common causes
Common causes include Loose, damaged, or missing gas cap, Cracked or damaged EVAP system hose, 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 11, 2024
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Code P0455 2009 Nissan Altima Sedan Description

The P0455 code for a 2009 Nissan Altima Sedan indicates that the Evaporative Emission Control System has detected a gross leak. This system is responsible for capturing and containing fuel vapors to prevent them from escaping into the atmosphere. A leak in this system can lead to increased emissions, reduced fuel efficiency, and potential safety hazards.

OBDII Code P0455 2009 Nissan Altima Sedan - EVAP Control System Gross Leak Detected
P0455 2009 Nissan Altima Sedan Code - EVAP Control System Gross Leak Detected

Common Causes of P0455 2009 Nissan Altima Sedan

  1. Loose, damaged, or missing gas cap
  2. Cracked or damaged EVAP system hose
  3. Faulty purge valve
  4. Malfunctioning charcoal canister
  5. Corrosion or damage to EVAP system components

Symptoms of P0455 2009 Nissan Altima Sedan

  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 vehicle

How to Fix P0455 2009 Nissan Altima Sedan

  1. Inspect the gas cap for proper sealing and tighten or replace as needed
  2. Check EVAP system hoses for cracks or damage and replace as necessary
  3. Test the purge valve for proper operation and replace if faulty
  4. Inspect the charcoal canister for 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 P0455 2009 Nissan Altima Sedan

The cost of repairing a P0455 code on a 2009 Nissan Altima Sedan can vary depending on the specific cause of the issue. In general, replacing a gas cap can cost between $20 and $50, while repairing or replacing EVAP system hoses, purge valves, or charcoal canisters can range from $100 to $500. Labor costs can add an additional $100 to $200, depending on the shop's hourly rates and the complexity of the repair. It's recommended to consult with a mechanic or auto repair shop for a more accurate cost estimate based on your vehicle's specific needs.

What does this mean?

Tech Notes for P0455 2009 Nissan Altima Sedan

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



There is a factory Nissan service bulletin for the 2009 Nissan Altima Sedan:

2009 Nissan Altima Sedan Factory Service Bulletin OBDII Code P0455











User Submitted Video

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 2009 Nissan Altima Sedan Code

1. What does OBDII code P0455 mean for a 2009 Nissan Altima Sedan?

The code P0455 indicates that the EVAP control system has detected a gross leak.

2. What are the common symptoms of a P0455 code on a 2009 Nissan Altima Sedan?

Common symptoms include the check engine light coming on, a strong fuel odor near the vehicle, and potential issues with overall engine performance.

3. What are the possible causes of a P0455 code on a 2009 Nissan Altima Sedan?

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

4. How can I diagnose a P0455 code on my 2009 Nissan Altima Sedan?

Diagnosing a P0455 code typically involves visually inspecting the EVAP system components, checking the gas cap for tightness and damage, and using a scan tool to monitor system pressure readings.

5. Can I continue driving my 2009 Nissan Altima Sedan with a P0455 code?

While the vehicle may still be operational with a P0455 code, it is recommended to address the issue promptly to prevent potential fuel economy issues and further damage to the EVAP system.

6. How can I repair a P0455 code on my 2009 Nissan Altima Sedan?

Repair steps may include tightening or replacing the gas cap, repairing or replacing damaged EVAP system components, and clearing the trouble code with a scan tool after completing the repairs.

7. Will a P0455 code on a 2009 Nissan Altima Sedan affect fuel efficiency?

A P0455 code can potentially lead to decreased fuel efficiency due to the EVAP system not functioning optimally, causing fuel vapors to escape into the atmosphere.

8. How much does it typically cost to repair a P0455 code on a 2009 Nissan Altima Sedan?

The cost of repairing a P0455 code can vary depending on the root cause of the issue and the labor rates in your area. Simple fixes like a gas cap replacement may be relatively inexpensive, while more complex repairs could be more costly.

9. Can a DIY enthusiast fix a P0455 code on a 2009 Nissan Altima Sedan?

Depending on the cause of the P0455 code, some DIY enthusiasts with automotive repair experience may be able to address the issue themselves by following repair guides or tutorials.

10. How often does a P0455 code occur in a 2009 Nissan Altima Sedan?

The occurrence of a P0455 code can vary depending on factors like vehicle age, maintenance history, and driving conditions, but it is a relatively common code that can occur intermittently.

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