P0442 2009 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 2009 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 2009 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 2009 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 2009 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 2009 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.
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Frequently Asked Questions about P0442 2009 Nissan Sentra Code
What does the OBDII code P0442 mean for a 2009 Nissan Sentra?
The P0442 code indicates that the vehicle's onboard diagnostic system has detected a small leak in the EVAP (Evaporative Emission Control) system.
What are the common symptoms of a P0442 code?
Common symptoms may include the check engine light being illuminated, a slight decrease in fuel efficiency, and in some cases, a noticeable fuel odor.
What could cause a P0442 code in a 2009 Nissan Sentra?
Possible causes include a loose or damaged gas cap, cracked or damaged EVAP hoses, a faulty EVAP canister, or problems with the purge valve.
How can I check for a gas cap issue related to P0442?
Start by ensuring the gas cap is tightened properly; if the cap is damaged or worn, replace it and see if the code persists.
What are some repair tips for fixing a P0442 code?
Inspect and replace the gas cap if necessary, check for cracked or disconnected hoses in the EVAP system, and test the purge valve for proper operation.
Can I drive my 2009 Nissan Sentra with a P0442 code?
While it is possible to drive the vehicle with this code, it is advisable to address the issue promptly to prevent potential emissions system problems and reduced fuel efficiency.
Will clearing the P0442 code fix the problem?
Clearing the code may temporarily turn off the check engine light, but if the underlying issue is not resolved, the code will likely reappear.
Is the P0442 code serious?
The P0442 code is not typically considered serious in terms of immediate safety, but it does indicate a problem with the emissions system that should be fixed to ensure compliance with emissions regulations.
How much does it typically cost to repair a P0442 code?
Repair costs can vary widely depending on the cause of the leak, but simple fixes like replacing a gas cap may be inexpensive, while more complex repairs could range from $100 to $500 or more.
Discuss the causes and fixes for P0442 2009 Nissan Sentra OBDII Code
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