How do you reset the 'check engine' light on a 2002 pt cruiser yourself?

To reset the 'check engine' light on a 2002 PT Cruiser, you can disconnect the negative battery terminal for about 15 minutes. This will reset the vehicle's computer and clear the light. Alternatively, you can use an OBD-II scanner to read and erase the trouble codes. However, it's important to address any underlying issues that triggered the light before resetting it.