Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer has detected a problem with the part that helps control the fumes from the gas tank. It's like a switch that isn't working, so the car can't properly manage the gas fumes.
The P0444 code indicates that the EVAP (Evaporative Emission Control System) purge control valve circuit is open, meaning there is a break or disconnection in the electrical circuit.
The EVAP system is designed to capture and store fuel vapors from the fuel tank and prevent them from escaping into the atmosphere. The purge control valve regulates the flow of these vapors into the engine to be burned. An open circuit in this valve means the electrical signal is not reaching the valve, preventing it from functioning.
• Check Engine Light is on
• Increased emissions
• Possible fuel smell
• Faulty purge control valve
• Damaged or corroded wiring/connectors
• Blown fuse
EVAP: Evaporative Emission Control System
Purge Control Valve: A valve that controls the release of fuel vapors from the charcoal canister to the engine.
• Inspect the purge valve and its wiring for visible damage.
• Use a multimeter to check for continuity in the circuit.
• Check for blown fuses related to the EVAP system.
• Replace the faulty purge control valve.
• Repair or replace damaged wiring or connectors.
• Replace any blown fuses.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• Toyota Camry
• Ford F-150
• Honda Accord
• Regularly inspect the EVAP system components.
• Keep the vehicle's electrical system in good condition.
• Avoid overfilling the gas tank.
Sensor Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if unsure.
• Regular maintenance can prevent such issues.
Check your vehicle's warranty coverage for emissions-related components.
This code has been commonly reported in vehicles with over 100,000 miles, especially in areas with high humidity or salt exposure.
Moderate – While the vehicle may still be drivable, it is important to fix this issue to prevent increased emissions and potential fuel economy loss.
Driving with a malfunctioning EVAP system can lead to increased emissions, which may be illegal in some areas.
• Engine at normal operating temperature
• Vehicle parked on a level surface
The purge control valve is typically located near the engine or along the fuel tank's vapor line.
Q: Can I drive my car with a P0444 code?
A: Yes, but it is not recommended as it can lead to increased emissions and potential fuel economy issues.
Q: How serious is a P0444 code?
A: It's moderately serious as it affects emissions, but it won't cause immediate damage to the engine.
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A wired color-screen reader with readiness hotkeys, live data, code definitions, and data logging.
Good for emissions-related codes because it exposes readiness monitors and live powertrain data.
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Specialty · Smoke machine
Helpful for finding EVAP and vacuum leaks that are hard to see with visual inspection alone.
Helpful for tracking down EVAP and vacuum leaks that can trigger emissions faults.
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Specialty · O2 sensor socket
Helpful when the code points toward exhaust or oxygen-sensor work and space is tight.
Useful when the diagnosis points toward oxygen-sensor removal or replacement.
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Fitment Required · Vehicle-fitment part
Relevant when EVAP diagnosis points toward purge-flow or purge-control faults.
EVAP diagnosis often includes purge-flow and valve-control faults.
Confirm the failed valve and exact fitment before buying parts.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.