What causes the check engine light to come on on a 94 suzuki swift?

The check engine light on a 1994 Suzuki Swift can be triggered by various issues, including problems with the engine's emissions system, such as a faulty oxygen sensor or catalytic converter. It may also indicate issues with the ignition system, fuel delivery problems, or a malfunctioning engine control unit (ECU). Additionally, loose or damaged connections in the wiring or vacuum leaks can also activate the light. It's essential to use an OBD-I scanner to retrieve the specific trouble codes for accurate diagnosis.