P0441 Code: EVAP Incorrect Purge Flow — Causes & Fix
P0441 means the evaporative emissions (EVAP) system purge flow is incorrect — fuel vapour is not being drawn into the engine as expected.
- Applies to
- All OBD-II vehicles (any make or model)
- Est. repair cost
- $30 – $350
- Time to fix
- 30 minutes – 2 hours
What it means
Causes include a stuck purge valve, a blocked or cracked purge line, or a fault in the vent/valve control. P0441 is a generic OBD-II powertrain code defined in the SAE J2012 standard, so it applies to virtually any 1996-or-newer petrol car or light truck regardless of make. Fix the underlying fault, then clear the code with an OBD-II scan tool — it will return if the problem isn't resolved.
Symptoms
- Check engine light on
- Usually no drivability effect
- May fail an emissions test
How to fix it
- 1
Test the purge valve
1. Check that the purge valve opens and closes on command and holds vacuum. 2. Replace a stuck valve.
- 2
Inspect the purge lines
1. Check the purge hoses for cracks or blockage. 2. Repair, then clear the code.
Frequently asked questions
Is P0441 serious?
It rarely affects how the car drives, but it is an emissions fault and will block an inspection pass, so it should be fixed.
Last updated July 19, 2026
Guidance only — always consult a qualified professional or the official service manual before carrying out repairs.