The 2022 MINI Convertible displaying P0441 with hesitation indicates the evaporative emission system isn't purging fuel vapors correctly. While the hesitation may seem coincidental, purge valve issues can affect engine performance through fuel mixture disruption.
EVAP System Function
The evaporative emission system captures fuel vapors from the tank, storing them in a charcoal canister until the ECM commands purge. The purge valve opens to draw vapors into the intake for combustion. This process must occur under specific conditions.
P0441 Explanation
P0441 indicates detected purge flow doesn't match expectations. The ECM commands purge and monitors fuel trim response. If expected changes don't occur, the code sets. This could mean no vapor is purging, too much is purging, or monitoring detected anomalies.
Hesitation Connection
A stuck-open purge valve continuously admits fuel vapors to the intake, creating rich conditions that cause hesitation during acceleration. Alternatively, blocked EVAP function may affect fuel tank venting, creating delivery issues.
Purge Valve Testing
The purge valve should be normally closed. Apply 12 volts and listen for clicking indicating solenoid operation. With valve removed, verify no air passes when de-energized and free flow when energized. Air passing when closed causes rich running.
Charcoal Canister
Fuel overfill can saturate the canister. A saturated canister may pass liquid fuel during purge, causing severe hesitation. Check canister for fuel contamination.
Repair Costs
Purge valve replacement costs $150-350. Charcoal canister replacement runs $300-600. Vacuum line repair costs $100-250. EVAP system diagnosis typically runs $100-200.