P0442 2007 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 2007 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 2007 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 2007 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 2007 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
There is a factory service bulletin for the 2007 Nissan Pathfinder:
2005-2007 Nissan Pathfinder Service Bulletin OBDII Code P0442
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0442 2007 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 2007 Nissan Pathfinder code?
Need more information on how to fix the P0442 2007 Nissan Pathfinder code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0442 2007 Nissan Pathfinder code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0442 2007 Nissan Pathfinder Code
1. What does the OBDII code P0442 mean on a 2007 Nissan Pathfinder?
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 a P0442 code on a 2007 Nissan Pathfinder?
Symptoms may include an illuminated check engine light, a slight decrease in fuel efficiency, and in some cases, a faint fuel odor near the vehicle.
3. What causes the P0442 code on a 2007 Nissan Pathfinder?
Common causes include a loose or damaged gas cap, cracked or deteriorated EVAP hoses, a faulty purge valve, a leaking EVAP canister, or a malfunctioning vent control valve.
4. Can a loose gas cap trigger the P0442 code on my 2007 Nissan Pathfinder?
Yes, a loose or improperly sealed gas cap is one of the most common reasons for the P0442 code.
5. How do I fix the P0442 code on a 2007 Nissan Pathfinder?
Start by tightening or replacing the gas cap. If the code persists, inspect EVAP system components like hoses, valves, and the canister for damage or leaks.
6. Can I drive with a P0442 code on my 2007 Nissan Pathfinder?
Yes, the vehicle is usually drivable, but ignoring the issue can lead to reduced fuel efficiency and may cause the EVAP system to malfunction further.
7. How do I diagnose the P0442 code on a 2007 Nissan Pathfinder?
Use an OBDII scanner to confirm the code, then visually inspect the gas cap, EVAP hoses, and components for leaks. A smoke test may be needed to locate small leaks.
8. How much does it cost to repair a P0442 code on a 2007 Nissan Pathfinder?
The cost varies depending on the issue. A gas cap replacement can cost $15-$50, while repairing EVAP system leaks or replacing components may range from $150 to $600.
9. Will clearing the P0442 code on my 2007 Nissan Pathfinder fix the problem?
Clearing the code will reset the check engine light temporarily, but if the underlying issue is not resolved, the code will return.
10. Can an EVAP leak cause my 2007 Nissan Pathfinder to fail an emissions test?
Yes, a P0442 code indicates an emissions system issue, which may cause your vehicle to fail a smog or emissions test.
Discuss the causes and fixes for P0442 2007 Nissan Pathfinder OBDII Code
-
I just changed the throttle on my car. The idle RPM will not relearn and now I got the P0442 code. Help please?
-
The P0442 should have nothing to do with throttle body, unless you left a hose disconnected near the throttle body. Why did you replaced the throttle body?
You could try disconnecting the car battery for more than 30 min and then try the relearn procedure again.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
