P0442 2012 Nissan Altima Sedan 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 Altima Sedan 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 Altima Sedan 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 Altima Sedan?
- 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 Altima Sedan?
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
User Submitted Video
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0442 2012 Nissan Altima Sedan 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 2012 Nissan Altima Sedan Code
1. What does OBDII code P0442 mean for a 2012 Nissan Altima Sedan?
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 2012 Nissan Altima Sedan?
Common symptoms include the illumination of the check engine light, the smell of fuel vapors, and potential problems with fuel economy.
3. What are the possible causes of a P0442 code in a 2012 Nissan Altima Sedan?
Common causes include a loose or damaged gas cap, a leak in the EVAP system hoses, a faulty purge valve, or a cracked charcoal canister.
4. How serious is a P0442 code in a 2012 Nissan Altima Sedan?
While a small EVAP leak may not immediately affect vehicle performance, it can lead to increased emissions and potentially trigger more serious problems if left unresolved.
5. How can I diagnose a P0442 code in my 2012 Nissan Altima Sedan?
Diagnosing a P0442 code typically involves inspecting the gas cap for tightness, visually checking EVAP system hoses for damage, and using a smoke machine to detect leaks.
6. Can I drive my 2012 Nissan Altima Sedan with a P0442 code?
It is generally safe to drive with a P0442 code, but it is recommended to address the issue promptly to prevent further emissions-related problems.
7. What are some repair tips for fixing a P0442 code in a 2012 Nissan Altima Sedan?
Start by checking and tightening the gas cap, inspecting and replacing damaged hoses, testing and replacing the purge valve if necessary, and examining the charcoal canister for cracks or leaks.
8. How much does it cost to repair a P0442 code in a 2012 Nissan Altima Sedan?
The cost of repair can vary depending on the specific cause of the code, but it may range from a simple gas cap replacement to more extensive repairs involving EVAP system components.
9. Can I reset the check engine light after fixing a P0442 code in my 2012 Nissan Altima Sedan?
Yes, after fixing the underlying issue causing the P0442 code, you can reset the check engine light using an OBDII scanner or by disconnecting the car's battery for a short period.
10. How can I prevent a P0442 code from recurring in my 2012 Nissan Altima Sedan?
To prevent a P0442 code from coming back, make sure to always tighten the gas cap properly after refueling, perform regular inspections of the EVAP system components, and address any potential leaks promptly.
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