DTC P113A O2 Sensor Circuit (Open) (Bank1 Sensor2): Wiring Diagram

Engine Electrical System ENGINE TYPE FA (WITHOUT PUSH BUTTON START) <Ref. to 2.0L TURBO (WITHOUT PUSH BUTTON START), WIRING DIAGRAM, Engine Electrical System.>
Engine Electrical System ENGINE TYPE FA (WITH PUSH BUTTON START) <Ref. to 2.0L TURBO (WITH PUSH BUTTON START), WIRING DIAGRAM, Engine Electrical System.>

Fig 1: O2 Sensor Circuit Diagram
Courtesy of SUBARU OF AMERICA, INC.

DIAGNOSTIC PROCEDURE

Step	Check	Yes	No
1 CHECK FOR ANY OTHER DTC ON DISPLAY .	Is any other DTC displayed?	Check the appropriate DTC using the "List of Diagnostic Trouble Code (DTC)". <Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) .>	Go to step 2 .
2 CHECK REAR OXYGEN SENSOR DATA . Warm up the engine until engine coolant temperature is higher than 75°C (167°F), and keep the engine speed at 3, 000 rpm. (2 minutes maximum) Read the value of «Oxygen sensor #12» using the Subaru Select Monitor or a general scan tool. NOTE: Subaru Select Monitor For detailed operation procedures, refer to "READ CURRENT DATA FOR ENGINE". <Ref. to SUBARU SELECT MONITOR .> General scan tool For detailed operation procedures, refer to the general scan tool operation manual.	Is the value of «Oxygen sensor #12» 0.490 V or more?	Go to step 6 .	Go to step 3 .
3 CHECK REAR OXYGEN SENSOR CONNECTOR .	Has water entered the connector?	Completely remove any water inside.	Go to step 4 .
4 CHECK HARNESS BETWEEN ECM AND REAR OXYGEN SENSOR CONNECTOR . Turn the ignition switch to OFF. Disconnect the connector from ECM and rear oxygen sensor. Measure the resistance of harness between ECM connector and rear oxygen sensor connector. Connector & terminal E-150 No. 42 - (E25) No. 3: E-150 No. 16 - (E25) No. 4:	Is the resistance less than 1 Ω?	Go to step 5 .	Repair the open circuit of harness between ECM connector and rear oxygen sensor connector.
5 CHECK HARNESS BETWEEN ECM AND REAR OXYGEN SENSOR CONNECTOR . Measure the resistance of harness between ECM connector and rear oxygen sensor connector. Connector & terminal E-150 No. 16 - Engine ground E-150 No. 42 - Engine ground	Is the resistance 1 Ω or more?	Go to step 6 .	Repair the short circuit to ground in harness between ECM connector and rear oxygen sensor connector.
6 CHECK EXHAUST SYSTEM . Check exhaust system parts. NOTE: Check the following items. Looseness and improper fitting of exhaust system parts Damage (crack, hole etc.) of parts Loose part and improper installation between front oxygen (A/F) sensor and rear oxygen sensor	Is there any fault in exhaust system?	Repair or replace faulty parts.	Replace the rear oxygen sensor. <Ref. to REAR OXYGEN SENSOR .>