AutoCodes – Nissan – P0444 2005 Nissan Altima Sedan

P0444 2005 Nissan Altima Sedan 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 2005 Nissan Altima Sedan 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 5,993

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 23, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0444 2005 Nissan Altima Sedan 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 2005 Nissan Altima Sedan - EVAP Canister Purge Volume Control Solenoid Valve Circuit Open - AutoCodes.com — P0444 2005 Nissan Altima Sedan Code - EVAP Canister Purge Volume Control Solenoid Valve Circuit Open

What does this mean?

What are the Possible Causes of the DTC P0444 2005 Nissan Altima Sedan?

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 2005 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.

What does this mean?

Code Tech Notes

There is a factory service bulletin for the 2005 Nissan Altima:
2005 Nissan Altima Factory Service Bulletin OBDII Code P0444

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0444 2005 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.

Need more information about the P0444 2005 Nissan Altima Sedan code?

Need more information on how to fix the P0444 2005 Nissan Altima Sedan code? Get Access to Factory Service Manuals

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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 2005 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P0444 in a 2005 Nissan Altima Sedan?

The common symptoms of P0444 in a 2005 Nissan Altima Sedan may include rough idling, decreased fuel efficiency, and the illumination of the Check Engine Light.

2. What does the OBDII code P0444 indicate in a 2005 Nissan Altima Sedan?

Code P0444 in a 2005 Nissan Altima Sedan indicates a problem with the EVAP (Evaporative Emission Control) system, specifically related to the Canister Purge Volume Control Solenoid Valve Circuit being open.

3. What are the possible causes of OBDII code P0444 in a 2005 Nissan Altima Sedan?

Possible causes of P0444 in a 2005 Nissan Altima Sedan include a faulty Canister Purge Volume Control Solenoid Valve, damaged wiring or connectors in the circuit, or a malfunctioning ECM (Engine Control Module).

4. How can I diagnose the issue causing OBDII code P0444 in my 2005 Nissan Altima Sedan?

To diagnose the issue causing P0444, you can perform a visual inspection of the Canister Purge Volume Control Solenoid Valve and its wiring, check for any loose connections, and use an OBDII scanner to retrieve additional fault codes.

5. Can I still drive my 2005 Nissan Altima Sedan with OBDII code P0444?

While it may be possible to drive your 2005 Nissan Altima Sedan with code P0444, it is recommended to address the issue promptly to prevent further damage to the EVAP system and ensure optimal vehicle performance.

6. How can I repair OBDII code P0444 in my 2005 Nissan Altima Sedan?

Repairing P0444 in a 2005 Nissan Altima Sedan typically involves replacing the Canister Purge Volume Control Solenoid Valve if it is faulty, repairing any damaged wiring or connectors, and clearing the trouble codes using an OBDII scanner.

7. Is it possible to reset the Check Engine Light after fixing OBDII code P0444 in my 2005 Nissan Altima Sedan?

Yes, you can reset the Check Engine Light after fixing P0444 in your 2005 Nissan Altima Sedan by using an OBDII scanner to clear the trouble codes stored in the ECM.

8. How much does it cost to repair OBDII code P0444 in a 2005 Nissan Altima Sedan?

The cost to repair P0444 in a 2005 Nissan Altima Sedan can vary depending on the extent of the issue and the labor rates in your area. Typically, replacing the Canister Purge Volume Control Solenoid Valve can cost between $100 to $300.

9. Can a DIY enthusiast fix OBDII code P0444 in a 2005 Nissan Altima Sedan?

If you have the necessary tools and automotive knowledge, you may be able to fix P0444 in your 2005 Nissan Altima Sedan as a DIY project. However, it is recommended to consult a professional if you are unsure about the repairs.

10. Will OBDII code P0444 cause emissions test failure for a 2005 Nissan Altima Sedan?

Yes, OBDII code P0444 can cause emissions test failure for a 2005 Nissan Altima Sedan, as it indicates a malfunction in the EVAP system, which is crucial for reducing harmful emissions from the vehicle.