DTC P013A-00: O2 Sensor Slow Response - Rich to Lean Bank 1 Sensor 2: General Description
WARNING: This page is about a different car, the 2021 Kia Soul. However, it is still accessible from the selected car via links, so may be relevant.
HO2S (Sensor2) is in the rear side of catalytic converter to check the proper operation of catalyst. Oxygen density after the catalytic converter has to be within specific range (Around 0.5V when there is no acceleration and deceleration). If the oxygen density changes in accordance with HO2S (Sensor1), it means the poor performance of catalytic converter.