A steady check-engine light and a flashing one are different signals. A flashing light can accompany an active misfire, which may overheat the catalytic converter if you keep driving under load.
Ease off the throttle and choose a safe place to stop if the engine runs roughly, smells unusually hot, or loses power. Read the stored codes before clearing them; the code is a starting clue, not a part diagnosis.
Quick educational note
For information, not a diagnosis or repair instruction. Vehicle-specific checks are still required. Consult the manufacturer's guidance and a qualified technician.
How to use this information
This article explains general principles and does not establish what is wrong with your vehicle. Read the content limitations.