AutoCodes – Nissan – P0442 2008 Nissan Sentra

P0442 2008 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 2008 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.

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Code Popularity 3,397

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 19, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0442 2008 Nissan Sentra Description

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. 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.

OBDII Code P0442 2008 Nissan Sentra - EVAP Control System Leak Detected Small Leak - AutoCodes.com — P0442 2008 Nissan Sentra Code - EVAP Control System Leak Detected Small Leak

What does this mean?

What are the Possible Causes of the DTC P0442 2008 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 2008 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.

What does this mean?

Code Tech Notes

The fuel tank filler cap and the Purge Volume Control Valve are the more common problems that will trigger the P0442 code on Nissan vehicles.

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 2008 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 2008 Nissan Sentra code?

Need more information on how to fix the P0442 2008 Nissan Sentra code? Get Access to Factory Service Manuals

Need Help with the Code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0442 2008 Nissan Sentra Code

1. What does the OBDII code P0442 mean for a 2008 Nissan Sentra?

The code P0442 on a 2008 Nissan Sentra indicates that the EVAP control system has detected a small leak.

2. What are the common symptoms of a P0442 code on a 2008 Nissan Sentra?

Common symptoms of a P0442 code may include the check engine light coming on, a slight decrease in fuel efficiency, and a gasoline odor near the vehicle.

3. What are the possible causes of a P0442 code on a 2008 Nissan Sentra?

Possible causes of a P0442 code include a loose or damaged gas cap, a leak in the EVAP system hoses, a malfunctioning purge valve, or a faulty charcoal canister.

4. How serious is a P0442 code on a 2008 Nissan Sentra?

While a P0442 code is not an immediate threat to the vehicle's drivability, it can lead to increased emissions and decreased fuel efficiency if not addressed promptly.

5. How can I diagnose a P0442 code on a 2008 Nissan Sentra?

Diagnosing a P0442 code typically involves inspecting the gas cap for proper sealing, checking the EVAP system hoses for leaks, testing the purge valve, and examining the charcoal canister for damage.

6. Are there any DIY repair tips for fixing a P0442 code on a 2008 Nissan Sentra?

DIY repair tips for a P0442 code may include tightening or replacing the gas cap, inspecting and replacing damaged hoses, testing and replacing the purge valve, or replacing the charcoal canister if necessary.

7. Can a P0442 code on a 2008 Nissan Sentra be fixed without professional help?

In some cases, fixing a P0442 code may be possible without professional help by addressing common issues like a loose gas cap or damaged hoses. However, more complex repairs may require the expertise of a mechanic.

8. How much does it typically cost to repair a P0442 code on a 2008 Nissan Sentra?

The cost of repairing a P0442 code on a 2008 Nissan Sentra can vary depending on the specific cause of the issue, but it may range from around $100 for a simple fix like a gas cap replacement to several hundred dollars for more extensive repairs.

9. What should I do if the P0442 code keeps coming back on a 2008 Nissan Sentra?

If the P0442 code keeps recurring after repairs, it's essential to reinspect the EVAP system components, ensure proper installation of parts, and consider seeking professional diagnostic assistance to pinpoint the underlying issue.

10. Is it safe to continue driving a 2008 Nissan Sentra with a P0442 code?

While it's generally safe to drive a 2008 Nissan Sentra with a P0442 code in the short term, it's recommended to address the issue promptly to prevent potential negative impacts on emissions and fuel economy.