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P0441

Evaporative emission control system incorrect purge flow

The ECU has detected EVAP purge flow that does not match the commanded condition.

What this code means

The ECU has detected EVAP purge flow that does not match the commanded condition.

Possible causes

  • Purge valve stuck open or closed
  • Blocked or leaking EVAP hose
  • Vent-system fault
  • Charcoal canister problem

Common symptoms

  • Check engine light
  • Possible rough idle after refuelling
  • Fuel-vapour smell in some cases

Checks to make

  1. Check purge-valve operation
  2. Inspect EVAP hoses
  3. Check fuel cap
  4. Smoke-test for leaks if needed

Safety

  • Do not replace parts from the code alone. Confirm the fault with live data, wiring checks and manufacturer procedures. Keep clear of hot or moving engine components.

Model notes

The code definition is generic; exact diagnostic thresholds, component locations and repair procedures vary by vehicle.