AutoCodes – Scion – P0441 Scion

P0441 Scion Code - Evaporative Emission Control System Incorrect Purge Flow

Quick Answer

5 hours after the ignition switch is turned off, the leak detection pump creates negative pressure (vacuum) in the Evaporative Emission (EVAP) system. Common causes include Loose or missing gas cap, Faulty Purge Vacuum Switching Valve (VSV), Purge Vacuum Switching Valve harness is open or shorted. 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: P0441 Scion indicates Evaporative Emission Control System Incorrect Purge Flow.
Common causes: Common causes include Loose or missing gas cap, Faulty Purge Vacuum Switching Valve (VSV), Purge Vacuum Switching Valve harness is open or shorted.
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 37,221

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 30, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
Comments
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Code P0441 Scion Description

5 hours after the ignition switch is turned off, the leak detection pump creates negative pressure (vacuum) in the Evaporative Emission (EVAP) system. The Engine Control Module (ECM) monitors for leaks and actuator malfunctions based on the EVAP pressure. The leak detection pump creates negative pressure through the reference orifice. When the system is normal, the EVAP pressure is between 97 to 100 kPa(abs) [726 to 750 mmHg(abs) (Typical value)] and saturated within a minute.
If stabilized pressure is higher than [second reference pressure x 0.2], ECM determines that Purge Vacuum Switching Valve (VSV) is stuck open. If pressure does not return to near atmospheric pressure, ECM determines that purge VSV is stuck closed. The ECM illuminates the MIL and stores a Diagnostic Trouble Code (DTC) if this malfunction is detected in consecutive drive cycles.

OBDII Code P0441 Scion - Evaporative Emission Control System Incorrect Purge Flow - AutoCodes.com — P0441 Scion Code - Evaporative Emission Control System Incorrect Purge Flow

What does this mean?

What are the Possible Causes of the DTC P0441 Scion?

Loose or missing gas cap
Faulty Purge Vacuum Switching Valve (VSV)
Purge Vacuum Switching Valve harness is open or shorted
Purge Vacuum Switching Valve circuit poor electrical connection
Faulty Canister Pump Module
Faulty EVAP Canister
Faulty Engine Control Module (ECM)

How to Fix the DTC P0441 Scion?

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 does this mean?

Code Tech Notes

The P0441 code means that the control module has detected a leak in the Evaporative Emission (EVAP). A loose fuel tank filler gas cap is the most common cause that triggers the P0441 code.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0441 Scion 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 P0441 Scion code?

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Information for Specific Scion Models

P0441 2005 Scion xB — Evaporative Emission Control System Incorrect Purge Flow
P0441 2006 Scion xB — Evaporative Emission Control System Incorrect Purge Flow
P0441 2007 Scion xB — Evaporative Emission Control System Incorrect Purge Flow

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.