DTC P2195 Oxygen (A/F) Sensor Signal Stuck Lean (Bank 1 Sensor 1); DTC P2196 Oxygen (A/F) Sensor Signal Stuck Rich (Bank 1 Sensor 1): Wiring Diagram
WARNING: This page is about a different car, the 2008 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.