Refer to DTC P0030 (Refer to DTC P0030: A/F Sensor Heater Control Circuit (Bank 1 Sensor 1); DTC P0031: Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 1 Sensor 1); DTC P0032: Oxygen (A/F) Sensor Heater Control Circuit High (Bank 1 Sensor 1) [12/2017 - 08/2019] ).