Low One-way Clutch
WARNING: This page is about a different car, the 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
The low One-Way Clutch (OWC) is a brake clutch that holds the rear planetary carrier in one direction and allows it to freewheel in the opposite direction which eliminates engine braking in 1st gear when the transmission is in DRIVE. The low One-Way Clutch (OWC) is also the pressure plate for the low/reverse clutch.