DTC P0171: System Too Lean (Bank 1); DTC P0172: System Too Rich (Bank 1); DTC P0174: System Too Lean (Bank 2); DTC P0175: System Too Rich (Bank 2): Wiring Diagram
WARNING: This page is about a different car, the 2012 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.
Refer to DTC P0102. Refer to WIRING DIAGRAM .
Refer to DTC P2195. Refer to WIRING DIAGRAM .