AutoCodes – Nissan – P0442 2012 Nissan Pathfinder

P0442 2012 Nissan Pathfinder Code - EVAP Control System Leak Detected Small Leak

Quick Answer

The Engine Control Module (ECM) tests the Evaporative Emission (EVAP) system for the following conditions: - Large and small leaks - Excess vacuum - Purge flow during non-commanded conditions - Fuel Level and Fuel Pressure sensor faults - EVAP Purge and Vent Valve faults The ECM monitors the Fuel Tank Pressure sensor in order to determine the level of vacuum/pressure in the EVAP system. 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: P0442 2012 Nissan Pathfinder indicates EVAP Control System Leak Detected Small Leak.
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.

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Code Popularity 4,662

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 Jun 19, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0442 2012 Nissan Pathfinder Description

The Engine Control Module (ECM) tests the Evaporative Emission (EVAP) system for the following conditions:
- Large and small leaks
- Excess vacuum
- Purge flow during non-commanded conditions
- Fuel Level and Fuel Pressure sensor faults
- EVAP Purge and Vent Valve faults
The ECM monitors the Fuel Tank Pressure sensor in order to determine the level of vacuum/pressure in the EVAP system. The ECM commands both the EVAP Purge Solenoid and the EVAP Vent Valve ON when the conditions are met in order to apply an engine vacuum to the EVAP system. The ECM commands the EVAP Purge Solenoid OFF once the system has reached a predetermined level of vacuum. This test verifies if a vacuum can be achieved in the EVAP system. Failure to develop a vacuum may be caused by a large leak or a restriction.

OBDII Code P0442 2012 Nissan Pathfinder - EVAP Control System Leak Detected Small Leak - AutoCodes.com — P0442 2012 Nissan Pathfinder Code - EVAP Control System Leak Detected Small Leak

What does this mean?

What are the Possible Causes of the DTC P0442 2012 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
EVAP canister or fuel tank leaks
EVAP system hose leaking
Fuel tank leaking

How to Fix the DTC P0442 2012 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 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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0442 2012 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 P0442 2012 Nissan Pathfinder code?

Need more information on how to fix the P0442 2012 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 P0442 2012 Nissan Pathfinder Code

1. What does OBDII code P0442 on a 2012 Nissan Pathfinder indicate?

The OBDII code P0442 for a 2012 Nissan Pathfinder indicates that the EVAP control system has detected a small leak.

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

Common symptoms of a P0442 code include the check engine light coming on, a slight decrease in fuel efficiency, and a noticeable fuel odor.

3. What are the possible causes of a P0442 code on a 2012 Nissan Pathfinder?

Potential causes of a P0442 code on a 2012 Nissan Pathfinder include a loose or damaged gas cap, a cracked or leaking EVAP hose, a faulty EVAP canister, or a malfunctioning purge valve.

4. How can I diagnose a P0442 code on my Nissan Pathfinder?

Diagnosing a P0442 code typically involves checking the gas cap for tightness, inspecting the EVAP system for visible damage or leaks, and using a smoke machine to pinpoint the source of the leak.

5. Can I continue driving my Nissan Pathfinder with a P0442 code?

While the vehicle may still be drivable with a P0442 code, it is recommended to address the issue promptly to prevent potential damage to the EVAP system and ensure optimal vehicle performance.

6. How can I repair a P0442 code on my 2012 Nissan Pathfinder?

Repairing a P0442 code may involve tightening or replacing the gas cap, repairing or replacing damaged EVAP hoses, replacing a faulty EVAP canister, or repairing or replacing a malfunctioning purge valve.

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

DIY tips for addressing a P0442 code include checking the gas cap for proper sealing, visually inspecting EVAP hoses for cracks or leaks, and ensuring all EVAP system components are securely connected.

8. How much does it typically cost to repair a P0442 code on a 2012 Nissan Pathfinder?

The cost of repairing a P0442 code on a 2012 Nissan Pathfinder can vary depending on the specific issue, but it may range from around $100 for a simple fix like a gas cap replacement to several hundred dollars for more extensive repairs.

9. Can a P0442 code on a Nissan Pathfinder reset itself after repairs?

After addressing the underlying issue causing the P0442 code, you can clear the code using an OBDII scanner. If the problem has been successfully resolved, the check engine light should not reappear.

10. How important is it to address a P0442 code on a 2012 Nissan Pathfinder?

While a P0442 code may not cause immediate drivability issues, it is important to address it promptly to ensure proper vehicle emissions control, prevent potential damage to the EVAP system, and maintain optimal fuel efficiency.