P0442 2002 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 2002 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 2002 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 2002 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 2002 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
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0442 2002 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 2002 Nissan Altima Sedan Code
1. What does the OBDII code P0442 for a 2002 Nissan Altima Sedan mean?
The P0442 code indicates that the EVAP control system has detected a small leak in the system, specifically in the vapor pressure sensor circuit.
2. What are common symptoms of an EVAP control system small leak in a 2002 Nissan Altima?
Common symptoms of a P0442 code may include the illumination of the check engine light, a faint gasoline smell near the vehicle, and potential issues with passing emissions tests.
3. What are possible causes of a small EVAP system leak in a 2002 Nissan Altima Sedan?
Common causes of a P0442 code on a 2002 Nissan Altima include a loose or damaged gas cap, cracked or disconnected EVAP hoses, a faulty purge control valve, or a damaged charcoal canister.
4. How serious is a P0442 code on a 2002 Nissan Altima Sedan?
While a P0442 code is not an immediate cause for concern regarding vehicle safety, it can impact emissions and fuel efficiency. It is recommended to address the issue promptly to prevent further damage to the EVAP system.
5. How can I diagnose a P0442 code in my 2002 Nissan Altima Sedan?
Diagnosing a P0442 code typically involves checking the gas cap for tightness, inspecting EVAP system hoses for damage, testing the purge control valve, and checking the charcoal canister for leaks or damage.
6. Can I repair a P0442 code on my 2002 Nissan Altima Sedan myself?
Depending on the cause of the P0442 code, some repairs can be done at home, such as tightening or replacing a gas cap. However, more complex issues may require professional diagnosis and repair.
7. Will a P0442 code on a 2002 Nissan Altima Sedan affect the car's performance?
In most cases, a P0442 code will not impact the vehicle's performance or drivability. However, it may lead to decreased fuel efficiency and increased emissions if left unresolved.
8. How much does it cost to fix a P0442 code on a 2002 Nissan Altima Sedan?
The cost of repairing a P0442 code can vary depending on the underlying cause. Simple fixes like tightening a gas cap may be inexpensive, while more complex issues like replacing a charcoal canister can be more costly.
9. Can a P0442 code on a 2002 Nissan Altima Sedan cause other codes to appear?
While a P0442 code itself may not directly trigger other codes, unresolved issues within the EVAP system can lead to additional trouble codes over time if left unaddressed.
10. How long can I drive with a P0442 code on my 2002 Nissan Altima Sedan before getting it fixed?
It is generally recommended to address a P0442 code as soon as possible to prevent potential issues with emissions, fuel efficiency, and overall performance. Driving with the code for an extended period is not advisable.
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