Optima L4-2.4L (2001)
8.
Turn Hi-Scan Pro tool on, select "06. OPTIMA 2.4D REAR 02 SENSOR (P0139)" and press the "ENTER" key.
9.
Select "01. OPTIMA2.4D 01/02MY (AUTO MODE)" and press the "ENTER" key.
10.
At the prompt, enter your password "0525" and press the "ENTER" key.