DTC P0154 O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1): DTC Detecting Condition

WARNING: This page is about a different car, the 2007 Subaru Outback. However, it is still accessible from the selected car via links, so may be relevant.

Immediately at fault recognition
GENERAL DESCRIPTION <Ref. to DTC P0154 O2 SENSOR CIRCUIT NO ACTIVITY DETECTED (BANK 2 SENSOR 1) , Diagnostic Trouble Code (DTC) Detecting Criteria.>

CAUTION: After repair or replacement of faulty parts, perform Clear Memory Mode <Ref. to OPERATION , Clear Memory Mode.> and Inspection Mode <Ref. to PROCEDURE , Inspection Mode.>.