A flashing check engine light that stops signals a potentially serious engine issue, often related to severe misfires, ignition system problems, fuel system malfunctions, or emissions control faults. While the light may stop flashing due to temporary self-corrections or intermittent issues, the underlying problem requires prompt attention to prevent damage to the catalytic converter, engine, and other components. Understanding the causes and implications, and taking appropriate steps like regular maintenance, error code scanning, and professional diagnosis, are crucial for maintaining vehicle health and safety.