DTC Description
WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
ECM monitors RPM, if Idle RPM shift-up is lower than 50 RPM during cold start catalyst light off or idle RPM shift-up is enough but the difference between target idle RPM and actual idle RPM is higher than 100, ECM sets a P050A00 DTC.