DTC P0141: O2 Sensor Heater Circuit (Bank1 Sensor2)
WARNING: This page is about a different car, the 2014 Subaru XV Crosstrek. However, it is still accessible from the selected car via links, so may be relevant.
Refer to DTC P0037 for diagnostic procedure. < Ref. to DTC P0037 HO2S HEATER CONTROL CIRCUIT LOW (BANK 1 SENSOR 2) , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>