DTC Detecting Condition and Trouble Area

WARNING: This page is about a different car, the 2006 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.

DTC DETECTING CONDITION CHART

DTC detecting condition	Trouble area
DTC P0057 HO2S Heater Control Circuit Low (Sensor-2, Bank-2): Circuit current of HO2S (bank-2) heater is lower than specification (0.16 - 0.28 A depending on battery voltage) for more than 1 sec. continuously while control duty of HO2S sensor heater is ON with engine running. (2 driving cycle detection logic) DTC P0058 HO2S Heater Control Circuit High (Sensor-2, Bank-2): Circuit current of HO2S sensor (bank-2) heater is higher than 5 A at ON duty pulse or 0.2 A at OFF duty pulse for more than 1 sec. continuously while control duty of HO2S sensor heater is ON with engine running. (2 driving cycle detection logic)	HO2S heater circuit HO2S ECM

DTC detecting condition

Trouble area

DTC P0057 HO2S Heater Control Circuit Low (Sensor-2, Bank-2):
Circuit current of HO2S (bank-2) heater is lower than specification (0.16 - 0.28 A depending on battery voltage) for more than 1 sec. continuously while control duty of HO2S sensor heater is ON with engine running. (2 driving cycle detection logic)
DTC P0058 HO2S Heater Control Circuit High (Sensor-2, Bank-2):
Circuit current of HO2S sensor (bank-2) heater is higher than 5 A at ON duty pulse or 0.2 A at OFF duty pulse for more than 1 sec. continuously while control duty of HO2S sensor heater is ON with engine running. (2 driving cycle detection logic)

HO2S heater circuit
HO2S
ECM