Why does the engine malfunction indicator light sometimes turn on and off?

[OKeegan]

It may be due to poor gasoline atomization and combustion efficiency when starting the engine cold, as the engine temperature is low. Engine malfunction indicator light intermittently turning on and off: This phenomenon occurs more frequently in winter, but generally requires no special attention. Within the first 5-10 minutes of starting, the engine malfunction light may flicker on and off, and the symptom will disappear once the coolant temperature normalizes. Vehicle self-diagnosis system: When a vehicle malfunction occurs, the malfunction indicator light on the dashboard will illuminate to alert the owner of potential issues. Pressing a button will display the fault code on the dashboard. Simultaneously, this fault signal will be stored in memory. Even after turning off the ignition switch, resolving the fault, or the indicator light turning off, the fault signal remains stored in memory to assist technicians in diagnosing the vehicle's problem.