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Engine-Codes – Nissan – P0444 2002 Nissan Altima Sedan

P0444 2002 Nissan Altima Sedan Code - EVAP Canister Purge Volume Control Solenoid Valve Circuit Open

Quick Answer

The P0444 diagnostic trouble code (DTC) for a 2002 Nissan Altima Sedan specifically refers to the EVAP (Evaporative Emission Control) Canister Purge Volume Control Solenoid Valve Circuit being open. Common causes include Faulty EVAP canister purge volume control solenoid valve, Wiring or connector issues in the solenoid valve circuit, Vacuum leaks in the EVAP system. 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 2002 Nissan Altima Sedan indicates EVAP Canister Purge Volume Control Solenoid Valve Circuit Open.
Common causes
Common causes include Faulty EVAP canister purge volume control solenoid valve, Wiring or connector issues in the solenoid valve circuit, Vacuum leaks in the EVAP system.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P0444 2002 Nissan Altima Sedan Description

The P0444 diagnostic trouble code (DTC) for a 2002 Nissan Altima Sedan specifically refers to the EVAP (Evaporative Emission Control) Canister Purge Volume Control Solenoid Valve Circuit being open. This means that there is an issue with the electrical circuit of the solenoid valve responsible for controlling the flow of vapor from the EVAP system to the engine. The EVAP system helps to reduce harmful emissions by capturing and storing fuel vapors before they can escape into the atmosphere.

OBDII Code P0444 2002 Nissan Altima Sedan - EVAP Canister Purge Volume Control Solenoid Valve Circuit Open
P0444 2002 Nissan Altima Sedan Code - EVAP Canister Purge Volume Control Solenoid Valve Circuit Open

Common Causes of P0444 2002 Nissan Altima Sedan

  1. Faulty EVAP canister purge volume control solenoid valve
  2. Wiring or connector issues in the solenoid valve circuit
  3. Vacuum leaks in the EVAP system
  4. Charcoal canister saturation
  5. Faulty ECM (Engine Control Module)

Symptoms of P0444 2002 Nissan Altima Sedan

  1. Check engine light illuminated on the dashboard
  2. Rough idling or engine misfires
  3. Decreased fuel efficiency
  4. Stalling or hesitation during acceleration
  5. Strong fuel odor from the vehicle

How to Fix P0444 2002 Nissan Altima Sedan

  1. Begin by diagnosing the specific cause of the P0444 code using a scan tool to identify the issue with the solenoid valve circuit.
  2. Inspect the wiring and connectors associated with the solenoid valve for any damage or corrosion, repairing or replacing as needed.
  3. Test the EVAP canister purge volume control solenoid valve for proper operation and replace it if it is found to be faulty.
  4. Check for any vacuum leaks in the EVAP system and address them accordingly to ensure proper function.
  5. Clear the DTC from the vehicle's memory using the scan tool and verify that the check engine light does not reappear after the repair.

Cost to Fix P0444 2002 Nissan Altima Sedan

The typical repair costs for addressing a P0444 code on a 2002 Nissan Altima Sedan can vary depending on the specific cause of the issue. In general, the cost of a new EVAP canister purge volume control solenoid valve can range from $50 to $150, while the labor costs for diagnosis and repair can range from $100 to $300. Overall, the total repair cost for this issue may fall between $150 and $450, including parts and labor. However, it is important to note that these estimates are approximate and actual costs may vary based on factors such as location, vehicle make and model, and the specific repair shop rates. It is recommended to consult with a certified mechanic or auto repair shop for a more accurate cost estimate based on your individual circumstances.

What does this mean?

Tech Notes for P0444 2002 Nissan Altima Sedan

There is a factory service bulletin for the 2002 Nissan Altima:

2002 Nissan Altima Factory Service Bulletin OBDII Code P0444

When is the Code Detected?

An excessively low voltage signal is sent to ECM through the valve

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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 2002 Nissan Altima Sedan Code

1. What does OBDII code P0444 mean on a 2002 Nissan Altima Sedan?

P0444 indicates that the EVAP Canister Purge Volume Control Solenoid Valve Circuit is open, meaning the ECM has detected an electrical issue with the purge valve circuit.

2. What are the symptoms of code P0444 on a 2002 Nissan Altima?

Common symptoms include a check engine light, decreased fuel efficiency, possible fuel odor, and difficulties passing emissions tests.

3. What causes the P0444 code on a 2002 Nissan Altima?

Possible causes include a faulty purge volume control solenoid valve, damaged or corroded wiring, disconnected connectors, or a failed ECM.

4. How do I fix the P0444 code on my 2002 Nissan Altima?

Inspect and repair any damaged wiring or connectors, replace the EVAP purge solenoid valve if defective, and clear the code with an OBDII scanner to see if it returns.

5. Can I drive my 2002 Nissan Altima with the P0444 code?

While the car may still be drivable, it is not recommended as it could lead to reduced fuel efficiency, environmental impacts, and difficulty passing emissions tests.

6. How can I test the EVAP canister purge solenoid valve?

You can test the solenoid by applying power and ground to its terminals to see if it clicks, indicating proper operation. If it doesn’t click, it may need replacement.

7. Is the P0444 code specific to electrical issues in the purge valve circuit?

Yes, P0444 specifically points to an open circuit in the EVAP purge solenoid valve, indicating an electrical issue rather than a mechanical fault.

8. How much does it cost to repair code P0444 on a 2002 Nissan Altima?

Repair costs vary but may range from $50 to $200 for parts and labor, depending on whether the issue is wiring-related or the solenoid valve itself needs replacement.

9. Can a loose gas cap cause the P0444 code on a 2002 Nissan Altima?

No, a loose gas cap is unlikely to cause P0444 as this code specifically relates to the purge valve circuit, not the overall EVAP system pressure.

10. What tools do I need to diagnose code P0444 on my 2002 Nissan Altima?

You’ll need an OBDII scanner, a multimeter to check for continuity in the circuit, and basic hand tools to inspect and replace components if necessary.

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