AutoCodes – Nissan – P1444 2004 Nissan Altima Sedan

P1444 2004 Nissan Altima Sedan Code - EVAP Canister Purge Volume Control Solenoid Valve

Quick Answer

This system controls the flow rate of fuel vapor from the EVAP canister. Common causes include Faulty EVAP control system pressure sensor, Faulty EVAP canister purge volume control solenoid valve (The valve is stuck open.), Faulty EVAP canister vent control valve. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1444 2004 Nissan Altima Sedan indicates EVAP Canister Purge Volume Control Solenoid Valve.
Common causes
Common causes include Faulty EVAP control system pressure sensor, Faulty EVAP canister purge volume control solenoid valve (The valve is stuck open.), Faulty EVAP canister vent control valve.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 3,959
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 04, 2020
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Code P1444 2004 Nissan Altima Sedan Description

This system controls the flow rate of fuel vapor from the 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.
OBDII Code P1444 2004 Nissan Altima Sedan - EVAP Canister Purge Volume Control Solenoid Valve - AutoCodes.com
P1444 2004 Nissan Altima Sedan Code - EVAP Canister Purge Volume Control Solenoid Valve

What are the Possible Causes of the DTC P1444 2004 Nissan Altima Sedan?

  • Faulty EVAP control system pressure sensor
  • Faulty EVAP canister purge volume control solenoid valve (The valve is stuck open.)
  • Faulty EVAP canister vent control valve
  • Faulty / Broken EVAP canister
  • Hoses (Hoses are connected incorrectly or clogged)

How to Fix the DTC P1444 2004 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1444 2004 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.

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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 P1444 2004 Nissan Altima Sedan Code

What does the OBDII code P1444 indicate in a 2004 Nissan Altima Sedan?

The OBDII code P1444 indicates a problem with the EVAP (Evaporative Emission Control) canister purge volume control solenoid valve, which can affect the vehicle's emissions system.

What are the common symptoms of a P1444 code?

Common symptoms include the Check Engine Light being illuminated, rough idling, increased fuel consumption, and occasional engine stalling.

What could cause the P1444 code to trigger?

The P1444 code can be triggered by a faulty EVAP canister purge volume control solenoid, a clogged EVAP canister, vacuum leaks, or issues with the vehicle's wiring and connectors.

How can I diagnose the P1444 code?

To diagnose the P1444 code, you should start by using an OBDII scanner to confirm the code, then inspect the EVAP system for leaks, check the solenoid valve for proper operation, and examine related wiring and connectors.

What repairs are typically needed to fix the P1444 code?

Repairs may involve replacing the EVAP canister purge volume control solenoid, repairing or replacing damaged wiring, or cleaning/replacing the EVAP canister if it's clogged.

Can I drive my 2004 Nissan Altima Sedan with a P1444 code?

While it may be possible to drive the vehicle, it is not recommended as the vehicle may have reduced performance, increased emissions, and potential damage to the engine or emissions system.

Is the P1444 code related to the vehicle's fuel efficiency?

Yes, a malfunctioning EVAP canister purge volume control solenoid can lead to increased fuel consumption due to improper fuel vapor management.

Will clearing the P1444 code resolve the issue?

Clearing the P1444 code will not resolve the underlying issue. The problem must be diagnosed and repaired to prevent the code from returning.

How much does it typically cost to repair a P1444 code issue?

Repair costs can vary widely but may range from $100 to $500 or more, depending on the specific repairs needed and local labor rates.

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