How do you reset the check engine light on 2005 Subaru Outback?

The best solution would be to borrow an OBD II code reader from Schuck's, plug it in (just below hood release mechanism in 2000 model), note the error code, and clear it by following the instructions on the screen. Alternatively, you can remove an reattach the negative terminal on the battery. This will reset your electrical system though, so it could mess with security systems and you might have to reset your clock.