Evaporative emission (EVAP)
P0441 — Evaporative Emission System Incorrect Purge Flow
The ECU detects that the amount of fuel vapour flowing from the EVAP canister into the intake is not what it expects. The purge valve or its lines may be stuck, blocked or leaking.
Common causes
- Purge valve stuck open or closed
- Blocked or cracked purge line
- Faulty vent valve
- Saturated or damaged charcoal canister
- Faulty purge valve wiring
Symptoms
- Check engine light
- Rough idle or hard starting after refuelling
- Fuel smell
- Failed emissions test
How to check
- Command the purge valve with a scan tool and check whether it clicks and holds vacuum
- Inspect the purge line for kinks, cracks and blockage
- Check the vent valve and canister
- Check the wiring and connector
Can you keep driving?
Usually drivable, but a purge valve stuck open can cause hard starting after refuelling. Repair it soon.
Related codes
Frequently asked questions
- What does P0441 mean?
- The vapour flow from the EVAP canister to the intake is not what the ECU expects.
- Why is it hard to start after refuelling with P0441?
- A purge valve stuck open can pull fuel vapour into the intake and flood the mixture.
General reference information. It does not replace a diagnosis on your own vehicle. The same code can have different causes depending on make, model year and engine; check the manufacturer's documentation or ask a technician with a scan tool.