EVAP Canister Purge Volume Control Solenoid Valve
Table of contents
- Possible Causes
- How To Fix
- Tech Notes
- Cost To Diagnose
- When is the code detected
- Possible Symptoms
- Description
P1444 NISSAN Possible Causes
- 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 do I fix code P1444 NISSAN?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
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 Factory Service Bulletin OBDII Code P1444
Cost of diagnosing the P1444 NISSAN code
The cost of diagnosing the P1444 NISSAN code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
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 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.