Heated Oxygen Sensor (Sensor 1) Inspection

Inspect HO2S-1 and its circuit referring to and/or DTC P0131/P0132: O2 SENSOR (BANK 1 SENSOR -1) Circuit Low/High Voltage under H27 Engine and/or DTC P0151/P0152: O2 SENSOR (BANK 2 SENSOR-1) Circuit Low/High Voltage under H27 Engine". If malfunction is found, replace.