AutoCodes – Infiniti – P1446 Infiniti

P1446 Infiniti Code - EVAP Canister Vent Control Valve Close

Quick Answer

The EVAP canister vent control valve is located on the EVAP canister and is used to seal the canister vent. Common causes include Faulty EVAP Pressure Sensor, EVAP Pressure Sensor harness is open or shorted, EVAP Pressure Sensor circuit poor electrical connection. 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: P1446 Infiniti indicates EVAP Canister Vent Control Valve Close.
Common causes: Common causes include Faulty EVAP Pressure Sensor, EVAP Pressure Sensor harness is open or shorted, EVAP Pressure Sensor circuit poor electrical connection.
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 14,301

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 P1446 Infiniti Description

The EVAP canister vent control valve is located on the EVAP canister and is used to seal the canister vent.
This solenoid valve responds to signals from the Engine Control Module (ECM). When the ECM sends an ON signal, the coil in the solenoid valve is energized. A plunger will then move to seal the canister vent. The ability to seal the vent is necessary for the on board diagnosis of other evaporative emission control system components.
This solenoid valve is used only for diagnosis, and usually, remains opened. When the vent is closed, under normal purge conditions, the evaporative emission control system is depressurized and allows EVAP Control System (Small Leak) diagnosis.

OBDII Code P1446 Infiniti - EVAP Canister Vent Control Valve Close - AutoCodes.com — P1446 Infiniti Code - EVAP Canister Vent Control Valve Close

What does this mean?

What are the Possible Causes of the DTC P1446 Infiniti?

Faulty EVAP Pressure Sensor
EVAP Pressure Sensor harness is open or shorted
EVAP Pressure Sensor circuit poor electrical connection
Blocked rubber tube to EVAP canister vent control valve
EVAP Water separator
EVAP canister is saturated with water
Faulty EVAP canister vent control valve

How to Fix the DTC P1446 Infiniti?

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 P1446 Infiniti 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 P1446 Infiniti code?

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Information for Specific Infiniti Models

P1446 2003 Infiniti G35 — EVAP Canister Vent Control Valve Close
P1446 2004 Infiniti G35 — EVAP Canister Vent Control Valve Close
P1446 2006 Infiniti G35 — EVAP Canister Vent Control Valve Close

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.