DTC P0136 HEATED OXYGEN SENSOR 2 (REAR) (CIRCUIT); Wiring Diagram

Full-page wiring diagram YEF937 for HO2S2 (rear). Pin 30 W (heater control for rear), pin 10 Y/G (sensor ground), pin 39 W/R (sensor signal); plus shared ECM-relay pins 27 W/G and 54 G/W. Rear sensor connector is F56 (vs front sensor F13).