How do you reset check engine light on a 2004 KIA Spectra?

To reset the check engine light on a 2004 Kia Spectra, you can disconnect the negative battery terminal for about 15 minutes, then reconnect it. Alternatively, you can use an OBD-II scanner to clear the trouble codes that triggered the light. If the underlying issue is not resolved, the light may come back on after resetting. Always ensure to address any mechanical issues before resetting the light.