What are the Possible Causes of the DTC P0444 Infiniti?
NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
Faulty Evaporative Emission (EVAP) Purge Solenoid Control
Evaporative Emission Purge Solenoid Control harness is open or shorted
Evaporative Emission Purge Solenoid Control circuit poor electrical connection
⚠ Does your Infiniti have Safety Recalls? → Check here
How to Fix the DTC P0444 Infiniti?
Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
Search for P0444 Infiniti Questions and Answers: Search here →
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0444 Infiniti code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.
What are Code Possible Symptoms?
Engine Light ON (or Service Engine Soon Warning Light)
Code P0444 Infiniti Description
This system controls the flow rate of fuel vapor from the Evaporative Emission System (EVAP) canister. The opening of the vapor bypass 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 airflow changes.
The EVAP canister purge volume control solenoid valve uses a ON/OFF duty to control the flow rate of fuel vapor from the EVAP canister. ON/OFF from the ECM pulses move the EVAP canister purge volume control solenoid valve. The longer the ON pulse, the greater the fuel vapor flow through the valve.
The Diagnostic Trouble Code (DTC) will be set when an excessively low voltage signal is sent to ECM through the valve.
P0444 Infiniti Code - EVAP Canister Purge Volume Control Solenoid Valve Circuit Open
Help us improve AutoCodes.com. Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the P0444 Infiniti code? Have you replaced any parts? Any information is appreciated. Thanks