Heated Oxygen Sensor (Sensor 1) Inspection
WARNING: This page is about a different car, the 2004 Suzuki XL-7 and 2004 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.
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.