The fan may continue to run for several minutes after the engine is shut off to compensate for the potentially blocked airflow.
Most commonly, this code points to an issue with the (specifically ignition coils or spark plugs) in modern BMW engines (such as the N20, N26, B46, or B48).
Disclaimer: This technical paper is for informational purposes. Always consult a certified BMW technician or the official BMW TIS (Technical Information System) for specific repair instructions for your VIN.
Often accompanied by other codes like 28E200 (temperature sensor fault).