Why is my 96 ford aspire check engine light on?

The check engine light on your 1996 Ford Aspire could be triggered by various issues, such as a faulty oxygen sensor, a loose or damaged gas cap, or problems with the engine's emissions system. It’s also possible that there are issues with the ignition system, fuel system, or other engine components. To diagnose the exact cause, it's best to use an OBD-II scanner to retrieve any error codes stored in the vehicle's computer. Addressing the underlying issue will help turn off the check engine light and ensure your car runs smoothly.