P0442 2008 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 2008 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 2008 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 2008 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 2008 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 2008 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 2008 Nissan Pathfinder code?
Need more information on how to fix the P0442 2008 Nissan Pathfinder code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0442 2008 Nissan Pathfinder code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0442 2008 Nissan Pathfinder Code
What does the OBDII code P0442 mean for a 2008 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.
What are the common symptoms of a P0442 code in a 2008 Nissan Pathfinder?
The most common symptoms include an illuminated check engine light, a faint fuel smell near the vehicle, and potentially lower fuel efficiency.
What are the possible causes of a P0442 code in a 2008 Nissan Pathfinder?
Possible causes include a loose or damaged gas cap, cracked or deteriorated EVAP hoses, a faulty purge valve, or a malfunctioning charcoal canister.
Can a loose gas cap trigger a P0442 code?
Yes, a loose, damaged, or improperly sealed gas cap is one of the most common causes of a P0442 code.
How do I fix a P0442 code on my 2008 Nissan Pathfinder?
Start by tightening or replacing the gas cap. If the issue persists, inspect EVAP hoses and components for cracks or leaks and replace any damaged parts.
Can I drive my 2008 Nissan Pathfinder with a P0442 code?
Yes, you can drive the vehicle, but it’s recommended to address the issue promptly to avoid potential environmental harm and reduced fuel efficiency.
How do I troubleshoot the EVAP system for a P0442 code?
Use a smoke test to detect leaks in the EVAP system, visually inspect all hoses and connections, and check the gas cap for damage or improper sealing.
Is a P0442 code specific to the gas cap, or can it involve other components?
While the gas cap is a common cause, a P0442 code can also involve other components like the purge valve, vent valve, or EVAP hoses.
How much does it cost to repair a P0442 code on a 2008 Nissan Pathfinder?
Repair costs vary, but replacing a gas cap is usually $10–$50, while fixing other EVAP system components can range from $100 to $500 depending on the part and labor.
Will clearing the P0442 code with an OBDII scanner fix the problem?
Clearing the code will turn off the check engine light temporarily, but if the underlying issue isn’t fixed, the code will likely return.
Discuss the causes and fixes for P0442 2008 Nissan Pathfinder OBDII Code
Code P0442 2008 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.
