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 a part of the car that helps control gas fumes isn't closing properly, like a door that won't shut.
The purge valve is part of the evaporative emission control system (EVAP) and helps manage fuel vapors. If it's stuck open, it can cause issues with the car's emissions system.
The P1440 code indicates that the purge valve in the EVAP system is not closing as it should. This valve is responsible for controlling the flow of fuel vapors from the charcoal canister to the engine. When it remains open, it can lead to incorrect air-fuel mixture and emissions problems.
• Check Engine Light is on
• Poor fuel economy
• Rough engine idle
• Faulty purge valve
• Damaged or disconnected vacuum lines
• Faulty EVAP system wiring or connectors
EVAP: Evaporative Emission Control System
Purge Valve: A component that controls the flow of fuel vapors to the engine
• Use an OBD-II scanner to confirm the code.
• Inspect the purge valve for physical damage or debris.
• Check vacuum lines for leaks or disconnections.
• Replace the faulty purge valve.
• Repair or replace damaged vacuum lines.
• Ensure all electrical connections are secure and intact.
• OBD-II scanner
• Vacuum gauge
• Multimeter
$100 - $250
Moderate
• Ford Focus
• Nissan Altima
• Toyota Camry
• Regularly inspect and maintain the EVAP system.
• Replace fuel caps promptly if damaged.
• Ensure proper vehicle maintenance schedules are followed.
Emission Control System Issue
• Address the issue promptly to avoid emissions test failures.
• Consult a professional mechanic if unsure about repairs.
Check vehicle warranty for coverage on emissions-related components.
The P1440 code has been associated with vehicles that have older or malfunctioning EVAP systems, particularly in models with high mileage.
Moderate – While the vehicle may still run, emissions and fuel efficiency are affected.
Driving with a malfunctioning emissions system may violate local emissions laws.
• Engine at operating temperature
• Vehicle in a safe, open area
The purge valve is typically located near the engine or along the fuel line, close to the charcoal canister.
Q: Can I drive with a P1440 code?
A: Yes, but it's not recommended as it can affect emissions and fuel efficiency.
Q: How can I prevent this issue?
A: Regular maintenance of the EVAP system and prompt repair of any fuel system issues can help prevent this problem.
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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.