P0442 2011 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 2011 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 2011 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 2011 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 2011 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 2011 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.
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Frequently Asked Questions about P0442 2011 Nissan Pathfinder Code
1. What does OBDII code P0442 mean on a 2011 Nissan Pathfinder?
Code P0442 indicates a small leak has been detected in the EVAP (Evaporative Emission Control) system, which prevents fuel vapors from escaping into the atmosphere.
2. What are the common symptoms of P0442 in a 2011 Nissan Pathfinder?
The most common symptom is the Check Engine Light turning on. In some cases, you may notice a faint fuel smell near the vehicle.
3. What causes code P0442 on a 2011 Nissan Pathfinder?
Common causes include a loose or damaged gas cap, cracked or disconnected EVAP hoses, a faulty purge or vent valve, or a leaking EVAP canister.
4. Can a loose gas cap cause P0442 on a 2011 Nissan Pathfinder?
Yes, a loose or improperly sealed gas cap is one of the most common causes of this code. Ensure the gas cap is tightened until it clicks.
5. How can I fix code P0442 on my 2011 Nissan Pathfinder?
Start by inspecting and tightening the gas cap. If that doesn’t resolve the issue, check the EVAP system hoses and components for damage or leaks and replace any faulty parts.
6. Is it safe to drive a 2011 Nissan Pathfinder with a P0442 code?
Yes, it is generally safe to drive with this code, but prolonged neglect can lead to reduced fuel efficiency and potential damage to the EVAP system.
7. How do I diagnose P0442 on a 2011 Nissan Pathfinder?
Use a smoke machine or a leak detection tool to find small leaks in the EVAP system. Inspect the gas cap, hoses, purge valve, and vent valve for damage or wear.
8. Can a faulty purge valve cause P0442 on a 2011 Nissan Pathfinder?
Yes, a malfunctioning purge valve can prevent the EVAP system from properly sealing, leading to a small leak and triggering the P0442 code.
9. How much does it cost to repair P0442 on a 2011 Nissan Pathfinder?
The cost depends on the issue. A gas cap replacement may cost $20-$50, while repairing hoses or replacing valves can range from $100 to $300 or more.
10. Will clearing the P0442 code fix the problem permanently?
No, clearing the code does not fix the underlying issue. You must identify and repair the source of the leak to prevent the code from returning.
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