AutoCodes – Infiniti – P0441 Infiniti

P0441 Infiniti Code - Evaporative Control System Incorrect Purge Flow

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 EVAP canister purge volume control solenoid valve stuck closed, EVAP control system pressure sensor and the circuit, Loose, disconnected or improper connection of rubber tube. 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: P0441 Infiniti indicates Evaporative Control System Incorrect Purge Flow.
Common causes: Common causes include EVAP canister purge volume control solenoid valve stuck closed, EVAP control system pressure sensor and the circuit, Loose, disconnected or improper connection of rubber tube.
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 18,478

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 14, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0441 Infiniti 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 P0441 Infiniti - Evaporative Control System Incorrect Purge Flow - AutoCodes.com — P0441 Infiniti Code - Evaporative Control System Incorrect Purge Flow

What does this mean?

What are the Possible Causes of the DTC P0441 Infiniti?

EVAP canister purge volume control solenoid valve stuck closed
EVAP control system pressure sensor and the circuit
Loose, disconnected or improper connection of rubber tube
Blocked rubber tube
Cracked EVAP canister
EVAP canister purge volume control solenoid valve circuit
Accelerator pedal position sensor
Blocked purge port
EVAP canister vent control valve

How to Fix the DTC P0441 Infiniti?

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 P0441 code means that the control module has detected a leak in the Evaporative Emission (EVAP). Loose fuel tank filler cap is the most common cause that triggers the P0441 code.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0441 Infiniti 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 P0441 Infiniti code?

Need more information on how to fix the P0441 Infiniti code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0441 Infiniti code diagnosed by a professional: Find a repair shop in your area

Information for Specific Infiniti Models

P0441 2003 Infiniti G35 — Evaporative Control System Incorrect Purge Flow
P0441 2004 Infiniti G35 — Evaporative Control System Incorrect Purge Flow
P0441 2005 Infiniti G35 — Evaporative Control System Incorrect Purge Flow
P0441 2006 Infiniti G35 — Evaporative Control System Incorrect Purge Flow

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 P0441 Infiniti Code

1. What are common symptoms of OBDII code P0441 in an Infiniti?

- Common symptoms include the check engine light illuminating, decreased fuel efficiency, and a gasoline smell near the vehicle.

2. What does the OBDII code P0441 in an Infiniti indicate?

- The code P0441 indicates a problem with the Evaporative Emission Control System, specifically an incorrect purge flow.

3. What are some possible causes of OBDII code P0441 in an Infiniti?

- Possible causes include a faulty purge valve, a leak in the evaporative emission system, a clogged charcoal canister, or a malfunctioning fuel tank pressure sensor.

4. How can I diagnose the source of OBDII code P0441 in my Infiniti?

- A proper diagnosis involves inspecting the components of the evaporative emission system, checking for leaks, testing the purge valve, and scanning the system for other potential issues.

5. Can I continue driving my Infiniti with OBDII code P0441?

- It is generally safe to drive with code P0441, but it is recommended to address the issue promptly to prevent potential damage to the emission control system and to ensure optimal vehicle performance.

6. How can I repair OBDII code P0441 in my Infiniti?

- Repair options may include replacing a faulty purge valve, repairing leaks in the system, cleaning or replacing the charcoal canister, or addressing issues with the fuel tank pressure sensor.

7. Is it possible to reset the check engine light after fixing OBDII code P0441 in an Infiniti?

- Yes, after repairing the issue causing code P0441, you can reset the check engine light using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes.

8. Can a DIY enthusiast fix OBDII code P0441 in an Infiniti?

- Depending on the cause of the code, DIY enthusiasts may be able to address some issues like replacing the purge valve or checking for visible leaks. However, more complex problems may require professional assistance.

9. How does OBDII code P0441 affect emissions testing for my Infiniti?

- A persistent code P0441 may cause your Infiniti to fail emissions testing, as it indicates a malfunction in the vehicle's evaporative emission control system.

10. How can I prevent OBDII code P0441 from recurring in my Infiniti?

- Regular maintenance, such as checking for leaks, replacing the gas cap if necessary, and ensuring proper operation of the evaporative emission system components, can help prevent code P0441 from recurring.