P0441

EVAP System Incorrect Purge Flow

Evaporative emissions (EVAP) Generic OBD-II Low

What it means

P0441 means the evaporative emissions system isn't purging fuel vapor at the rate the ECM expects — too much, too little, or none. The EVAP system captures fuel vapor and routes it to the engine to be burned. It's an emissions issue rather than a driving hazard, though a purge valve stuck open can cause a mild rough idle.

Low

Can I keep driving? Yes — this is an emissions fault, not a driving hazard; the car runs normally, though a purge valve stuck open can cause a mild rough idle.

Real-world scan data

Seen in

776

scans in the past year

Found in

0.1%

of scans

0.2%

of scans that found faults

Appears alongside · share of P0441 scans

P0455in 27.3% of scans

P0420in 13.5% of scans

P0456in 13.0% of scans

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

Common symptoms

What you'll notice

Check-engine light on
Occasional faint fuel odor
Mild rough idle if the purge valve is stuck open
Failed emissions test

Common causes

Most likely first

Faulty purge control valve (stuck open, stuck closed, or leaking)Likely
Cracked, disconnected, or blocked EVAP/vacuum hoseCommon
Faulty canister vent valveCommon
Clogged or saturated charcoal canisterLess often
Faulty fuel-tank pressure sensorLess often
Loose, corroded, or broken connector in the EVAP circuitLess often

How to diagnose & fix

Work through it in order

Read freeze-frame data and inspect the EVAP hoses between the purge valve, canister, and intake for cracks, blockage, or disconnection.
Test the purge valve — it should hold vacuum when closed and open on command; replace it if it leaks or sticks.
Check the canister vent valve and the fuel-tank pressure sensor operation.
Inspect connectors for corrosion, then clear the code and let the EVAP monitor re-run to confirm.

FAQ

Quick answers

Is it safe to drive with P0441?+

Yes. This is an evaporative-emissions fault, not a mechanical hazard. The main downside is failing emissions and released fuel vapor, so fix it, but it isn't urgent.

Can I just clear P0441?+

It returns after the EVAP monitor runs unless the purge valve, hose, or sensor at fault is actually repaired.