P0442 2009 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 2009 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.
Code P0442 2009 Nissan Pathfinder Description
- 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.
What are the Possible Causes of the DTC P0442 2009 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 2009 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.
Code Tech Notes
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 2009 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 2009 Nissan Pathfinder code?
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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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