DTC P0134 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1): Wiring Diagram
- Engine Electrical System ENGINE TYPE FB (WITHOUT PUSH BUTTON START) <Ref. to ENGINE PERFORMANCE (Legacy), ENGINE PERFORMANCE (Outback), Engine Electrical System.>
- Engine Electrical System ENGINE TYPE FB (WITH PUSH BUTTON START) <Ref. to ENGINE PERFORMANCE (Legacy), ENGINE PERFORMANCE (Outback), Engine Electrical System.>
DIAGNOSTICS PROCEDURE
| Step | Check | Yes | No |
|---|---|---|---|
1 CHECK HARNESS BETWEEN ECM AND FRONT OXYGEN (A/F) SENSOR CONNECTOR
.
|
Is the resistance less than 1 Ω? | Go to step 2 . | Repair the open circuit of harness between ECM connector and front oxygen (A/F) sensor connector. |
| 2 CHECK FOR POOR CONTACT
. Check for poor contact of ECM and front oxygen (A/F) sensor connector. |
Is there poor contact of ECM or front oxygen (A/F) sensor connector? | Repair the poor contact of ECM or front oxygen (A/F) sensor connector. | Replace the front oxygen (A/F) sensor. <Ref. to FRONT OXYGEN (A/F) SENSOR .> |