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Engine-Codes – Nissan – P1444 2002 Nissan Altima Sedan

P1444 2002 Nissan Altima Sedan Code - EVAP Canister Purge Volume Control Solenoid Valve

Quick Answer

The P1444 code on a 2002 Nissan Altima Sedan refers to an issue with the EVAP (Evaporative Emission Control System) Canister Purge Volume Control Solenoid Valve. Common causes include Faulty Canister Purge Volume Control Solenoid Valve: The most common cause of the P1444 code is a malfunctioning or failed EVAP canister purge volume control solenoid valve, Vacuum Leaks: Any leaks in the EVAP system, such as cracked hoses or loose connections, can trigger this code, Electrical Issues: Problems with the wiring, connectors, or electrical components related to the solenoid valve can also cause the code to appear. 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 2002 Nissan Altima Sedan indicates EVAP Canister Purge Volume Control Solenoid Valve.
Common causes
Common causes include Faulty Canister Purge Volume Control Solenoid Valve: The most common cause of the P1444 code is a malfunctioning or failed EVAP canister purge volume control solenoid valve, Vacuum Leaks: Any leaks in the EVAP system, such as cracked hoses or loose connections, can trigger this code, Electrical Issues: Problems with the wiring, connectors, or electrical components related to the solenoid valve can also cause the code to appear.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 16, 2024
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Code P1444 2002 Nissan Altima Sedan Description

The P1444 code on a 2002 Nissan Altima Sedan refers to an issue with the EVAP (Evaporative Emission Control System) Canister Purge Volume Control Solenoid Valve. This valve is responsible for controlling the flow of fuel vapor from the EVAP canister to the engine intake manifold. When this valve malfunctions or fails, it can lead to problems with the vehicle's emissions system, fuel efficiency, and overall performance.

OBDII Code P1444 2002 Nissan Altima Sedan - EVAP Canister Purge Volume Control Solenoid Valve
P1444 2002 Nissan Altima Sedan Code - EVAP Canister Purge Volume Control Solenoid Valve

Common Causes of P1444 2002 Nissan Altima Sedan

  1. Faulty Canister Purge Volume Control Solenoid Valve: The most common cause of the P1444 code is a malfunctioning or failed EVAP canister purge volume control solenoid valve.
  2. Vacuum Leaks: Any leaks in the EVAP system, such as cracked hoses or loose connections, can trigger this code.
  3. Electrical Issues: Problems with the wiring, connectors, or electrical components related to the solenoid valve can also cause the code to appear.
  4. Clogged EVAP Canister: A clogged or saturated EVAP canister can prevent the proper flow of fuel vapors and trigger the code.
  5. Evaporative Emissions System Malfunction: Issues with other components of the EVAP system, such as the charcoal canister or fuel tank pressure sensor, can also lead to the P1444 code.

Symptoms of P1444 2002 Nissan Altima Sedan

  1. Check Engine Light: The most common symptom associated with the P1444 code is the illumination of the check engine light on the vehicle's dashboard.
  2. Rough Idle: A malfunctioning EVAP canister purge volume control solenoid valve can cause the engine to idle roughly or inconsistently.
  3. Decreased Fuel Efficiency: Since the valve plays a crucial role in the fuel vapor management system, a faulty valve can lead to decreased fuel efficiency.
  4. Strong Fuel Odor: A leak or malfunction in the EVAP system can sometimes result in a strong fuel odor inside and outside the vehicle.

How to Fix P1444 2002 Nissan Altima Sedan

  1. Diagnose the Issue: Use an OBD-II scanner to retrieve the specific code and determine if the EVAP canister purge volume control solenoid valve is the root cause of the problem.
  2. Inspect the EVAP System: Check for any visible signs of damage, leaks, or clogs in the EVAP system components, including hoses, canister, and valve.
  3. Replace the Solenoid Valve: If the valve is found to be faulty, replace it with a new one following the manufacturer's guidelines.
  4. Clear the Code: After replacing the valve, clear the diagnostic trouble codes from the vehicle's computer using the OBD-II scanner.
  5. Test Drive: Take the vehicle for a test drive to ensure that the check engine light does not reappear and that the symptoms associated with the P1444 code have been resolved.

Cost to Fix P1444 2002 Nissan Altima Sedan

The cost of repairing a P1444 code on a 2002 Nissan Altima Sedan can vary depending on the specific cause of the issue and the labor rates in your area. Typically, the price for a new EVAP canister purge volume control solenoid valve ranges from $50 to $150. The total cost of parts and labor for this repair could be anywhere from $100 to $300. Keep in mind that additional diagnostic time and labor costs may apply, and rates can fluctuate based on location and the repair shop you choose. It's recommended to obtain quotes from multiple auto repair shops to ensure you receive a fair price for the repair.

What does this mean?

Tech Notes for P1444 2002 Nissan Altima Sedan

There is a Factory Service Bulletin for the 2002 Nissan Altima:

2002 Nissan Altima Factory Service Bulletin OBDII Code P1444

When is the Code Detected?

The canister purge flow is detected during the specified driving conditions, even when EVAP canister purge volume control solenoid valve is completely closed.

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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 2002 Nissan Altima Sedan Code

1. What are common symptoms of OBDII code P1444 in a 2002 Nissan Altima Sedan?

The common symptoms of code P1444 can include the check engine light illuminating on the dashboard, rough idling, decreased fuel efficiency, and a noticeable gasoline smell.

2. What does the EVAP Canister Purge Volume Control Solenoid Valve do in a 2002 Nissan Altima Sedan?

The EVAP Canister Purge Volume Control Solenoid Valve helps control the flow of fuel vapors from the charcoal canister to the engine intake manifold for combustion.

3. What are the possible causes of OBDII code P1444 in a 2002 Nissan Altima Sedan?

Potential causes of code P1444 can include a faulty EVAP Canister Purge Volume Control Solenoid Valve, a vacuum leak in the EVAP system, damaged hoses, or a malfunctioning charcoal canister.

4. How can I diagnose the EVAP Canister Purge Volume Control Solenoid Valve issue in a 2002 Nissan Altima Sedan?

Diagnosing the problem typically involves visually inspecting the hoses and connections for any signs of damage, testing the solenoid valve for proper operation using a multimeter, and checking for vacuum leaks in the EVAP system.

5. Can I drive my 2002 Nissan Altima Sedan with OBDII code P1444?

It is generally safe to drive the vehicle with code P1444, but it is recommended to address the issue promptly to prevent potential damage to other components and ensure optimal performance.

6. How can I repair OBDII code P1444 in my 2002 Nissan Altima Sedan?

Repairing code P1444 may involve replacing the EVAP Canister Purge Volume Control Solenoid Valve, repairing or replacing damaged hoses, fixing any vacuum leaks, or replacing the charcoal canister if necessary.

7. Is it possible to reset the OBDII code P1444 in a 2002 Nissan Altima Sedan?

Resetting the code can be done using an OBDII scanner or by disconnecting the car's battery for a few minutes. However, the underlying issue causing the code should be addressed to prevent it from recurring.

8. How much does it typically cost to repair OBDII code P1444 in a 2002 Nissan Altima Sedan?

The cost of repair can vary depending on the specific cause of the code and the labor rates of the repair shop. Generally, replacing the EVAP Canister Purge Volume Control Solenoid Valve can range from $100 to $300.

9. Will OBDII code P1444 cause my 2002 Nissan Altima Sedan to fail an emissions test?

Code P1444 is related to the EVAP system, which is not directly related to tailpipe emissions. However, it is recommended to address the issue before undergoing an emissions test to ensure the vehicle is running efficiently.

10. How can I prevent OBDII code P1444 from occurring in my 2002 Nissan Altima Sedan in the future?

Regular maintenance, such as checking and replacing damaged hoses, inspecting the EVAP system for leaks, and ensuring the charcoal canister is functioning properly, can help prevent code P1444 from occurring in the future.

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