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EmissionsSeverity Low: usually safe to drive

P0441Evaporative Emission System Incorrect Purge Flow

What it means

When the purge valve opens, the ECU doesn't see the expected change (in fuel trims or tank pressure). Purge flow is too low or too high.

Symptoms

  • Check engine light
  • Possibly a fuel smell
  • Usually no change in how the car drives

Common causes

  • Purge valve stuck closed or open
  • Blocked or disconnected purge hose
  • Saturated or blocked charcoal canister

What to check first

  1. Command the purge valve and watch fuel trims and tank pressure
  2. Check the purge hoses
  3. Apply vacuum to the valve: it should hold when closed
Can I drive with P0441? Usually yes. P0441 rarely affects how the car drives, but it keeps the check engine light on and can fail an emissions test.

Generic OBD-II meaning. Manufacturer-specific meanings and checks can differ; always check the service information for the car.

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P0441: questions and answers

What does P0441 mean?

P0441: Evaporative Emission System Incorrect Purge Flow. When the purge valve opens, the ECU doesn't see the expected change (in fuel trims or tank pressure). Purge flow is too low or too high.

What are the symptoms of P0441?

Check engine light. Possibly a fuel smell. Usually no change in how the car drives.

What causes P0441?

Purge valve stuck closed or open. Blocked or disconnected purge hose. Saturated or blocked charcoal canister.

How do you diagnose P0441?

1. Command the purge valve and watch fuel trims and tank pressure 2. Check the purge hoses 3. Apply vacuum to the valve: it should hold when closed

Can I drive with P0441?

Usually yes. P0441 rarely affects how the car drives, but it keeps the check engine light on and can fail an emissions test.