AutoCodes – Nissan – P0444 2006 Nissan Maxima

P0444 2006 Nissan Maxima Code - EVAP Canister Purge Volume Control Solenoid Valve Circuit Open

Quick Answer

This system controls flow rate of fuel vapor from the Evaporative Emission System (EVAP) canister. Common causes include Faulty Evaporative Emission (EVAP) Purge Solenoid Control, Evaporative Emission (EVAP) Purge Solenoid Control harness is open or shorted, Evaporative Emission (EVAP) Purge Solenoid Control circuit poor electrical connection. 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: P0444 2006 Nissan Maxima indicates EVAP Canister Purge Volume Control Solenoid Valve Circuit Open.
Common causes: Common causes include Faulty Evaporative Emission (EVAP) Purge Solenoid Control, Evaporative Emission (EVAP) Purge Solenoid Control harness is open or shorted, Evaporative Emission (EVAP) Purge Solenoid Control circuit poor electrical connection.
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 5,989

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0444 2006 Nissan Maxima Description

This system controls flow rate of fuel vapor from the Evaporative Emission System (EVAP) canister. The opening of the vapor by-pass passage in the EVAP canister purge volume control solenoid valve changes to control the flow rate. The EVAP canister purge volume control solenoid valve repeats ON/OFF operation according to the signal sent from the Engine Control Module (ECM). The opening of the valve varies for optimum engine control. The optimum value stored in the ECM is determined by considering various engine conditions. When the engine is operating, the flow rate of fuel vapor from the EVAP canister is regulated as the air flow changes.
The EVAP canister purge volume control solenoid valve uses a ON/OFF duty to control the flow rate of fuel vapor from the EVAP canister. The EVAP canister purge volume control solenoid valve is moved by ON/OFF pulses from the ECM. The longer the ON pulse, the greater the amount of fuel vapor that will flow through the valve.

OBDII Code P0444 2006 Nissan Maxima - EVAP Canister Purge Volume Control Solenoid Valve Circuit Open - AutoCodes.com — P0444 2006 Nissan Maxima Code - EVAP Canister Purge Volume Control Solenoid Valve Circuit Open

What does this mean?

What are the Possible Causes of the DTC P0444 2006 Nissan Maxima?

Faulty Evaporative Emission (EVAP) Purge Solenoid Control
Evaporative Emission (EVAP) Purge Solenoid Control harness is open or shorted
Evaporative Emission (EVAP) Purge Solenoid Control circuit poor electrical connection

How to Fix the DTC P0444 2006 Nissan Maxima?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0444 2006 Nissan Maxima 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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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 P0444 2006 Nissan Maxima Code

1. What does the OBDII code P0444 mean on a 2006 Nissan Maxima?

P0444 indicates an "Evaporative Emission System Purge Control Valve Circuit Open," meaning the ECU has detected no electrical signal or an open circuit in the purge valve circuit.

2. What are the common symptoms of code P0444 in a 2006 Nissan Maxima?

Symptoms may include the Check Engine Light turning on, poor fuel economy, trouble starting the engine, or a noticeable fuel smell.

3. What causes the P0444 code on a 2006 Nissan Maxima?

Common causes include a faulty EVAP canister purge control solenoid valve, damaged or corroded wiring, a disconnected electrical connector, or a malfunctioning ECU.

4. How do I diagnose the P0444 code on my 2006 Nissan Maxima?

Start by inspecting the purge valve wiring and connectors for damage or corrosion. Use a multimeter to check for continuity and proper voltage at the purge valve connector. Also, test the solenoid for proper resistance.

5. Can I drive my 2006 Nissan Maxima with a P0444 code?

While the car may still be drivable, it can lead to increased emissions, reduced fuel efficiency, and potential long-term damage to the emission system. Prompt repairs are recommended.

6. How do I fix the P0444 code on a 2006 Nissan Maxima?

Repairs may include replacing the faulty EVAP canister purge control solenoid valve, repairing or replacing damaged wiring or connectors, or reprogramming the ECU if necessary.

7. What does the EVAP canister purge solenoid valve do?

The purge solenoid valve controls the flow of fuel vapors from the EVAP canister to the intake manifold, preventing fuel vapors from being released into the atmosphere.

8. How much does it cost to fix the P0444 code on a 2006 Nissan Maxima?

Repair costs vary but typically range from $100 to $300, depending on whether the purge valve, wiring, or other components need replacement.

9. Can a loose gas cap cause the P0444 code on a 2006 Nissan Maxima?

No, a loose gas cap is not directly related to this code. However, it might trigger other EVAP-related codes.

10. How can I prevent the P0444 code from returning?

Regularly inspect the EVAP system components, including the purge valve, wiring, and connectors, for signs of wear, corrosion, or damage. Also, address any Check Engine Light issues promptly.