DTC P013A O2 Sensor Slow Response - Rich To Lean (Bank 1 Sensor 2): Wiring Diagram
WARNING: This page is about a different car, the 2013 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
Engine electrical system, turbo model < Refer to appropriate SYSTEM WIRING DIAGRAM. >
| Step | Check | Yes | No |
|---|---|---|---|
1 CHECK HARNESS BETWEEN ECM AND REAR OXYGEN SENSOR CONNECTOR.
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Is the resistance less than 1 Ω? | Go to step 2. | Repair the harness and connector.
NOTE:
In this case, repair the following item:
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| 2 CHECK HARNESS BETWEEN ECM AND REAR OXYGEN SENSOR CONNECTOR. Measure the resistance between rear oxygen sensor connector and chassis ground. Connector & terminal (T6) No. 3 - Chassis ground: |
Is the resistance 1 MΩ or more? | Go to step 3. | Repair the ground short circuit of harness between ECM and rear oxygen sensor connector. |
| 3 CHECK REAR OXYGEN SENSOR. Measure the resistance between rear oxygen sensor terminals. Terminals No. 3 - No. 4 |
Is the resistance less than 1 Ω? | Replace the rear oxygen sensor. < Refer to REAR OXYGEN SENSOR . > | Even if DTC is detected, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.
NOTE:
In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.
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