AutoCodes – Nissan – P0444 2008 Nissan Altima Sedan

P0444 2008 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 2008 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 7,473
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0444 2008 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 2008 Nissan Altima Sedan - EVAP Canister Purge Volume Control Solenoid Valve Circuit Open - AutoCodes.com
P0444 2008 Nissan Altima Sedan Code - EVAP Canister Purge Volume Control Solenoid Valve Circuit Open

What are the Possible Causes of the DTC P0444 2008 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 2008 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 P0444 2008 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 2008 Nissan Altima Sedan code?

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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 2008 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P0444 in a 2008 Nissan Altima Sedan?

- Common symptoms include rough idling, poor fuel efficiency, and the illumination of the check engine light.

2. What does the OBDII code P0444 on a 2008 Nissan Altima Sedan indicate?

- This code specifically points to a fault in the EVAP Canister Purge Volume Control Solenoid Valve Circuit, indicating an open circuit.

3. What are the potential causes of OBDII code P0444 in a 2008 Nissan Altima Sedan?

- Possible causes include a faulty purge volume control solenoid valve, damaged wiring in the circuit, or a loose electrical connection.

4. How can I diagnose the cause of OBDII code P0444 in my 2008 Nissan Altima Sedan?

- You can diagnose the issue by visually inspecting the wiring and connections, testing the solenoid valve for proper operation, and using a multimeter to check for continuity.

5. Is it safe to continue driving my 2008 Nissan Altima Sedan with OBDII code P0444?

- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to prevent potential damage to other components.

6. Can I repair OBDII code P0444 in my 2008 Nissan Altima Sedan myself?

- Depending on your skill level, you may be able to replace the purge volume control solenoid valve or repair the wiring yourself. However, professional assistance is recommended for accurate diagnosis and repair.

7. How much does it cost to repair OBDII code P0444 in a 2008 Nissan Altima Sedan at a mechanic?

- The cost of repairing this code can vary depending on the exact cause of the issue, but it typically ranges from $100 to $300 for parts and labor.

8. Will resetting the check engine light resolve OBDII code P0444 in my 2008 Nissan Altima Sedan?

- Resetting the check engine light may temporarily clear the code, but it will not fix the underlying issue causing the fault. The code is likely to reappear until the problem is addressed.

9. How long does it take to repair OBDII code P0444 in a 2008 Nissan Altima Sedan?

- The repair time can vary based on the cause of the code and the complexity of the repair. It may take anywhere from 30 minutes to a few hours to complete the repair.

10. Can OBDII code P0444 in a 2008 Nissan Altima Sedan affect the vehicle's emissions?

- Yes, this code indicates a problem with the EVAP system, which is responsible for controlling fuel vapors. If not addressed, it can potentially lead to increased emissions and may cause the vehicle to fail emissions tests.

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