P0442 2005 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 2005 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 2005 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 2005 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 2005 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 2005 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 2005 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 2005 Nissan Pathfinder code?
Need more information on how to fix the P0442 2005 Nissan Pathfinder code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0442 2005 Nissan Pathfinder code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0442 2005 Nissan Pathfinder Code
1. What does the OBDII code P0442 mean for a 2005 Nissan Pathfinder?
The code P0442 indicates that the EVAP control system has detected a small leak.
2. What are the common symptoms of a P0442 code in a 2005 Nissan Pathfinder?
Common symptoms include the check engine light illuminating, a gas cap warning light, and a slight decrease in fuel efficiency.
3. What are the potential causes of a P0442 code in a 2005 Nissan Pathfinder?
Common causes include a loose or damaged gas cap, a small leak in the EVAP system hoses, a faulty purge valve, or a cracked charcoal canister.
4. How serious is a P0442 code in a 2005 Nissan Pathfinder?
While a P0442 code is not an immediate cause for concern, it should be addressed to prevent potential issues with the vehicle's emissions system.
5. How can I diagnose a P0442 code in a 2005 Nissan Pathfinder?
Diagnosis typically involves checking the gas cap for tightness, inspecting the EVAP system hoses for leaks, testing the purge valve, and examining the charcoal canister for damage.
6. Can I still drive my 2005 Nissan Pathfinder with a P0442 code?
In most cases, it is safe to drive the vehicle with a P0442 code, but it is recommended to address the issue promptly to prevent further problems.
7. How can I repair a P0442 code in a 2005 Nissan Pathfinder?
Repairing a P0442 code may involve tightening or replacing the gas cap, repairing or replacing damaged hoses, replacing the purge valve, or replacing the charcoal canister.
8. Will a P0442 code reset itself in a 2005 Nissan Pathfinder?
If the underlying issue causing the P0442 code is resolved, the code may reset on its own after several successful drive cycles.
9. Can a P0442 code affect the performance of a 2005 Nissan Pathfinder?
While the P0442 code itself may not directly impact performance, unresolved issues with the EVAP system can potentially lead to decreased fuel efficiency over time.
10. How much does it typically cost to fix a P0442 code in a 2005 Nissan Pathfinder?
The cost of fixing a P0442 code can vary depending on the specific cause of the issue, but it may range from a simple fix like tightening the gas cap to more involved repairs like replacing components in the EVAP system.
Discuss the causes and fixes for P0442 2005 Nissan Pathfinder OBDII Code
Code P0442 2005 Nissan Pathfinder comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
