P0442 2010 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 2010 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 2010 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 2010 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 2010 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 2010 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 2010 Nissan Pathfinder Code
1. What does the OBDII code P0442 mean for a 2010 Nissan Pathfinder?
P0442 indicates a small leak in the EVAP (Evaporative Emission Control) system, which is responsible for preventing fuel vapors from escaping into the atmosphere.
2. What are the common symptoms of code P0442 in a 2010 Nissan Pathfinder?
The most common symptoms include the Check Engine Light turning on, a possible fuel odor near the vehicle, and occasionally decreased fuel efficiency.
3. What causes the P0442 code in a 2010 Nissan Pathfinder?
Common causes include a loose or damaged gas cap, cracked or disconnected EVAP hoses, a faulty purge valve, or a malfunctioning charcoal canister.
4. Can a loose gas cap trigger the P0442 code?
Yes, a loose, improperly seated, or damaged gas cap is one of the most frequent causes of a P0442 code.
5. How can I fix the P0442 code on my 2010 Nissan Pathfinder?
Start by tightening or replacing the gas cap. If the issue persists, inspect the EVAP system components, such as hoses, valves, and the charcoal canister, for damage or leaks.
6. Is it safe to drive my 2010 Nissan Pathfinder with the P0442 code?
Yes, it is generally safe to drive with this code, but it’s recommended to address the issue promptly to avoid increased emissions and potential damage to other EVAP system components.
7. How do I diagnose the P0442 code on a 2010 Nissan Pathfinder?
Use an OBDII scanner to confirm the code, inspect the gas cap for damage, visually check EVAP system hoses for cracks or disconnections, and perform a smoke test if necessary to locate leaks.
8. How much does it cost to repair a P0442 code on a 2010 Nissan Pathfinder?
Repair costs can vary, ranging from $20 for a new gas cap to $150-$600 for diagnosing and fixing more complex EVAP system issues.
9. Can extreme weather cause the P0442 code to appear?
Yes, extreme temperatures can cause EVAP system components, such as hoses, to crack or shrink, leading to small leaks.
10. Will clearing the P0442 code with an OBDII scanner fix the problem?
Clearing the code will turn off the Check Engine Light temporarily, but it won’t resolve the underlying issue. The code may return if the leak isn’t fixed.
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