P0442 2012 Nissan Sentra 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 2012 Nissan Sentra 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 2012 Nissan Sentra 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 2012 Nissan Sentra?
- 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 2012 Nissan Sentra?
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 2012 Nissan Sentra 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 2012 Nissan Sentra code?
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Frequently Asked Questions about P0442 2012 Nissan Sentra Code
1. What does the OBDII code P0442 on a 2012 Nissan Sentra mean?
The code P0442 indicates that the EVAP control system has detected a small leak in the system.
2. What are the common symptoms of a P0442 code on a 2012 Nissan Sentra?
Common symptoms include the check engine light coming on, a slight decrease in fuel efficiency, and potentially a gasoline smell near the vehicle.
3. What are the possible causes of a P0442 code on a 2012 Nissan Sentra?
Potential causes include a loose or damaged gas cap, a leak in the EVAP system hoses, a faulty purge valve, or a malfunctioning charcoal canister.
4. How can I diagnose a P0442 code on my 2012 Nissan Sentra?
Diagnosing a P0442 code typically involves checking the gas cap for tightness, visually inspecting the EVAP system hoses for leaks, and using a smoke machine to pinpoint the exact location of the leak.
5. How can I repair a P0442 code on a 2012 Nissan Sentra?
Repairing a P0442 code may involve tightening or replacing the gas cap, repairing or replacing damaged hoses in the EVAP system, or replacing faulty components like the purge valve or charcoal canister.
6. Can I continue driving my 2012 Nissan Sentra with a P0442 code?
While your vehicle may still be safe to drive with a P0442 code, it is recommended to address the issue promptly to prevent further damage to the EVAP system and ensure optimal fuel efficiency.
7. How much does it typically cost to repair a P0442 code on a 2012 Nissan Sentra?
The cost of repairing a P0442 code can vary depending on the underlying cause of the issue. Simple fixes like tightening the gas cap may be inexpensive, while replacing components like the charcoal canister can be more costly.
8. Will resetting the check engine light make the P0442 code go away on my 2012 Nissan Sentra?
Resetting the check engine light may temporarily clear the code, but if the underlying issue causing the P0442 code is not addressed, the code is likely to reappear after driving the vehicle for some time.
9. Are there any DIY tips for fixing a P0442 code on a 2012 Nissan Sentra?
DIY tips include checking and tightening the gas cap, visually inspecting hoses for cracks or damage, and using a smoke machine to locate and repair small leaks in the EVAP system.
10. How often does a P0442 code occur in a 2012 Nissan Sentra?
While the occurrence of a P0442 code can vary, it is a relatively common issue in vehicles with an EVAP system, including the 2012 Nissan Sentra. Regular maintenance and prompt attention to check engine lights can help prevent this code from appearing.
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