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P0442 2009 Nissan Pathfinder Code - EVAP Control System Leak Detected Small Leak

Quick Answer

The P0442 diagnostic trouble code for a 2009 Nissan Pathfinder indicates that there has been a small leak detected in the EVAP (Evaporative Emission Control) system. 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
P0442 2009 Nissan Pathfinder indicates EVAP Control System Leak Detected Small Leak.
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 10, 2024
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Code P0442 2009 Nissan Pathfinder Description

The P0442 diagnostic trouble code for a 2009 Nissan Pathfinder indicates that there has been a small leak detected in the EVAP (Evaporative Emission Control) system. The EVAP system is responsible for capturing and storing fuel vapors from the fuel tank to prevent them from escaping into the atmosphere. When a small leak is detected, it means that there is an issue with the system's ability to contain these vapors, which can lead to increased emissions and potential environmental harm.

OBDII Code P0442 2009 Nissan Pathfinder - EVAP Control System Leak Detected Small Leak
P0442 2009 Nissan Pathfinder Code - EVAP Control System Leak Detected Small Leak

Common Causes of P0442 2009 Nissan Pathfinder

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

Symptoms of P0442 2009 Nissan Pathfinder

  1. Check engine light illuminated on the dashboard
  2. Gas cap warning light may be displayed
  3. Decreased fuel efficiency
  4. Rough idling or engine stalling
  5. Strong fuel odor near the vehicle

How to Fix P0442 2009 Nissan Pathfinder

  1. Inspect the gas cap for tightness and proper sealing. Replace if damaged or worn.
  2. Check EVAP hoses for cracks, leaks, or disconnections. Repair or replace as needed.
  3. Test the purge valve for proper operation and replace if faulty.
  4. Inspect the charcoal canister for damage or contamination. Replace if necessary.
  5. Clear the diagnostic trouble code from the vehicle's computer using a scan tool to reset the check engine light.

Cost to Fix P0442 2009 Nissan Pathfinder

The cost estimate for repairing a P0442 code on a 2009 Nissan Pathfinder can vary depending on the specific cause of the small leak in the EVAP system. Generally, replacing a gas cap can cost between $20 and $50, while repairing or replacing EVAP hoses may range from $50 to $200. The cost of a new purge valve can be around $100 to $200, and a charcoal canister replacement may cost between $150 and $300.

What does this mean?

Tech Notes for P0442 2009 Nissan Pathfinder

The fuel tank filler cap and the Purge Volume Control Valve are the more common problems that will trigger the P0442 code on Nissan vehicles.



There is a factory Nissan service bulletin to help diagnose the P0442 code:

Nissan Factory Service Bulletin OBDII Code P0442

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 P0442 2009 Nissan Pathfinder Code

1. What does OBDII code P0442 mean on a 2009 Nissan Pathfinder?

The code P0442 indicates that the EVAP control system has detected a small leak in the system.

2. What are the common symptoms of OBDII code P0442 on a 2009 Nissan Pathfinder?

Common symptoms include the check engine light coming on, a slight decrease in fuel efficiency, and a faint gasoline smell near the vehicle.

3. What are the possible causes of OBDII code P0442 on a 2009 Nissan Pathfinder?

Common causes of P0442 include a loose or damaged gas cap, a leak in the EVAP system hoses, a faulty purge valve, or a malfunctioning EVAP canister.

4. How can I diagnose the source of the small leak associated with OBDII code P0442 on a 2009 Nissan Pathfinder?

A smoke test can be performed to pinpoint the location of the leak in the EVAP system. This test involves introducing smoke into the system to visually identify the leak.

5. Can I continue to drive my 2009 Nissan Pathfinder with OBDII code P0442?

While driving with code P0442 may not immediately harm your vehicle, it's important to address the issue promptly to prevent potential damage to the EVAP system and ensure proper vehicle performance.

6. How can I repair OBDII code P0442 on a 2009 Nissan Pathfinder?

Repair options include tightening or replacing the gas cap, inspecting and replacing damaged hoses, testing and replacing the purge valve, or checking and replacing the EVAP canister if necessary.

7. Are there any DIY tips for fixing OBDII code P0442 on a 2009 Nissan Pathfinder?

DIY enthusiasts can start by checking the gas cap for tightness and visible damage. Additionally, inspecting the EVAP system hoses for cracks or leaks and ensuring proper connections can help resolve the issue.

8. How much does it typically cost to fix OBDII code P0442 on a 2009 Nissan Pathfinder?

The cost of repairing code P0442 can vary depending on the specific cause of the issue. Costs may range from a simple gas cap replacement to more complex repairs involving EVAP system components.

9. How long does it take to repair OBDII code P0442 on a 2009 Nissan Pathfinder?

The repair time for P0442 can vary based on the underlying cause. Simple fixes like tightening the gas cap can be done quickly, while diagnosing and repairing leaks in the EVAP system may take longer.

10. Can resetting the check engine light resolve OBDII code P0442 on a 2009 Nissan Pathfinder?

Resetting the check engine light may temporarily clear the code, but it will likely return if the root cause of the small EVAP system leak is not addressed. It's best to diagnose and repair the issue to prevent future problems.

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