Home >> Scion >> 2007 >> tC Base, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control System (2AZ-FE) >> SFI System >> DTC P0031 Oxygen Sensor Heater Control Circuit Low (Bank 1 Sensor 1); DTC P0032 Oxygen Sensor Heater Control Circuit High (Bank 1 Sensor 1) >> Component Operating Range