Engine-Codes - Generic - P0444

P0444 Code - Evaporative Emission Control System Purge Control Valve Circuit Open

- Code Popularity: 49,237 Views
- Repair Importance Level: 1/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P0444?

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
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How to Fix the DTC P0444?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P0444 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P0444 Code Mean?

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 Code - Evaporative Emission Control System Purge Control Valve Circuit Open

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Code P0444 Information for Specific Makes

  • P0444 Audi EVAP System Purge Control Valve Circuit Open
  • P0444 BMW Evaporative Emission Control System Purge Control Valve Circuit Open
  • P0444 Hyundai Evaporative Emission System-Purge Control Valve Circuit Open
  • P0444 Infiniti EVAP Canister Purge Volume Control Solenoid Valve Circuit Open  📷
  • P0444 KIA EVAP Emission System Purge Control Valve Circuit Open
  • P0444 Mazda EVAP Control System Purge Control Valve Circuit Open
  • P0444 Mercedes-Benz Evaporative Emission Control System Purge Control Valve Circuit Open
  • P0444 MINI Evaporative Emission Control System Purge Control Valve Circuit Open
  • P0444 Nissan EVAP Canister Purge Volume Control Solenoid Valve Circuit Open  📷
  • P0444 Subaru Evaporative Emission Control System Purge Control Valve Circuit Open
  • P0444 Volkswagen EVAP System Purge Control Valve Circuit Open

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