Why is my engine light on after tightening gas cap?

[Curtis Wolfe]

Seriously, its not a conspiracy, its basic car maintenance. Tightening the gas cap properly helps prevent fuel leaks and engine issues. Taking care of your car is common sense, not a scheme by manufacturers.

[Joshua]

Did anyone else immediately think of aliens when reading about the engine light coming on after tightening the gas cap? Maybe its a secret signal to extraterrestrial beings! Just a wild thought...

[Zaiden]

Aliens? Seriously? Thats a bit of a stretch, dont you think? Lets stick to more plausible explanations here.