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P1444 Nissan

P1444 Nissan - EVAP Canister Purge Volume Control Solenoid Valve

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P1444 Nissan Comments |  Add Comment
Possible causes
- EVAP control system pressure sensor
- EVAP canister purge volume control solenoid valve (The valve is stuck open.)
- EVAP canister vent control valve
- EVAP canister
- Hoses (Hoses are connected incorrectly or clogged.)
What does this mean? What does this mean?
Tech notes
There is a factory service bulletin for the following Nissan models:

2002 Nissan Altima
2003 Nissan Altima
2004 Nissan Altima
2005 Nissan Altima
2002-2005 Nissan Altima Service Bulletin OBDII Code P1444
What does this mean? What does this mean?
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.
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1444 Nissan Description

This system controls 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.

P1444 Nissan Information for specific Nissan models
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NISSAN Technical Service Bulletins for P1444 code
2002 NISSAN ALTIMA Electrical System Details
2003 NISSAN ALTIMA Electrical System Details
2004 NISSAN ALTIMA Electrical System Details
2005 NISSAN ALTIMA Electrical System Details
2002 NISSAN ALTIMA 110000 Electrical System Details
More Bulletins What does this mean? What does this mean?
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