P1444 Code: Meaning, Causes, and Symptoms | OBD2 Codes

P1444 – EVAP Canister Purge Volume Control Solenoid Valve

 

P1444 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

P1444 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)

 

P1444 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.