AutoCodes – Generic – P1444

P1444 Code - EVAP Canister Purge Volume Control Solenoid Valve

Quick Answer

This system controls flow rate of fuel vapor from the EVAP canister. Common causes include 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. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1444 indicates EVAP Canister Purge Volume Control Solenoid Valve.
Common causes: Common causes include 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.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 35,429

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 22, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code 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.

OBDII Code P1444 - EVAP Canister Purge Volume Control Solenoid Valve - AutoCodes.com — P1444 Code - EVAP Canister Purge Volume Control Solenoid Valve

What does this mean?

What are the Possible Causes of the DTC P1444?

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 to Fix the DTC P1444?

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1444 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.

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Information for Specific Makes

P1444 Audi — EGR Valve Position Sensor Range/Performance
P1444 BMW — Diagnostic Module Tank Leakage Pump Control Open Circuit
P1444 Ford — Purge Flow Sensor Circuit Input Low
P1444 Infiniti — EVAP Canister Purge Volume Control Solenoid Valve
P1444 Jaguar — EVAP Canister Purge Control System
P1444 Lexus — Secondary Air Injection System Switching Valve Stuck Open Bank 2
P1444 Lincoln — Purge Flow Sensor Circuit Input Low
P1444 Mazda — Purge Flow Sensor Low Input
P1444 Mercedes-Benz — Evaporative Emission Canister Purge Valve Malfunction
P1444 Mercury — Purge Flow Sensor Circuit Input Low
P1444 MINI — Diagnostic Module Tank Leakage Pump Control Open Circuit
P1444 Nissan — EVAP Canister Purge Volume Control Solenoid Valve
P1444 Saab — Evaporative Emission Canister Purge Valve High Input
P1444 Scion — Secondary Air Injection System Switching Valve Stuck Open Bank 2
P1444 Toyota — Secondary Air Injection System Switching Valve Stuck Open Bank 2
P1444 Volkswagen — EGR Valve Position Sensor Range/Performance

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.