AutoCodes – Infiniti – P0442 2005 Infiniti G35

P0442 2005 Infiniti G35 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 2005 Infiniti G35 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 3,661

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 30, 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 2005 Infiniti G35 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 2005 Infiniti G35 - EVAP Control System Leak Detected Small Leak - AutoCodes.com — P0442 2005 Infiniti G35 Code - EVAP Control System Leak Detected Small Leak

What does this mean?

What are the Possible Causes of the DTC P0442 2005 Infiniti G35?

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 2005 Infiniti G35?

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 Infiniti vehicles.

There is an Infiniti Service Bulletin to help diagnose the P0442 code:
Infiniti Factory Service Bulletin OBDII Code P0442

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0442 2005 Infiniti G35 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 2005 Infiniti G35 code?

Need more information on how to fix the P0442 2005 Infiniti G35 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 2005 Infiniti G35 Code

1. What are the common symptoms of OBDII code P0442 in a 2005 Infiniti G35?

The common symptoms of P0442 in a 2005 Infiniti G35 include the check engine light coming on, a gas cap warning light, and a noticeable fuel odor.

2. What are the possible causes of OBDII code P0442 in a 2005 Infiniti G35?

Possible causes of P0442 in a 2005 Infiniti G35 include a loose or damaged gas cap, a cracked or damaged EVAP hose, a faulty purge control valve, or a small leak in the EVAP system.

3. How serious is OBDII code P0442 in a 2005 Infiniti G35?

While P0442 is not typically a serious issue that affects the drivability of the vehicle, it can lead to increased emissions and decreased fuel efficiency if left unresolved.

4. How can I diagnose the cause of OBDII code P0442 in my 2005 Infiniti G35?

Diagnosing P0442 may involve checking the gas cap for proper sealing, inspecting EVAP system hoses for cracks or damage, testing the purge control valve, and using a smoke machine to pinpoint the source of the leak.

5. Can I continue driving my 2005 Infiniti G35 with OBDII code P0442?

While you can continue driving your vehicle with P0442, it is recommended to address the issue promptly to prevent any potential negative effects on emissions and fuel efficiency.

6. How can I repair OBDII code P0442 in my 2005 Infiniti G35?

Repairing P0442 may involve tightening or replacing the gas cap, repairing or replacing damaged EVAP system hoses, replacing a faulty purge control valve, or sealing the small leak in the EVAP system.

7. Will resetting the check engine light resolve OBDII code P0442 in my 2005 Infiniti G35?

Simply resetting the check engine light may temporarily clear the code, but the underlying issue causing P0442 will need to be diagnosed and repaired to prevent the code from reoccurring.

8. How long does it typically take to repair OBDII code P0442 in a 2005 Infiniti G35?

The time to repair P0442 can vary depending on the exact cause of the code, but it usually takes anywhere from 30 minutes to a few hours to diagnose and fix the issue.

9. Can a DIY enthusiast repair OBDII code P0442 in a 2005 Infiniti G35?

Depending on the cause of P0442, some DIY enthusiasts may be able to repair the issue themselves by following repair guides and using basic tools. However, more complex issues may require professional assistance.

10. How much does it cost to repair OBDII code P0442 in a 2005 Infiniti G35?

The cost of repairing P0442 in a 2005 Infiniti G35 can vary based on the specific cause of the code and whether you perform the repairs yourself or take your vehicle to a professional mechanic. Costs may range from a few dollars for a new gas cap to a few hundred dollars for more extensive repairs.