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Home >> Suzuki >> 2008 >> Grand Vitara Base, AWD, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine General Information & Diagnosis >> Diagnostic Information And Procedures >> DTC P0057 / P0058: HO2S Heater Control Circuit Low / High (Sensor-2, Bank-2) >> DTC Detecting Condition and Trouble Area
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DTC Detecting Condition and Trouble Area

DTC DETECTING CONDITION AND TROUBLE AREA 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 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 (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 heater is ON with engine running.
(2 driving cycle detection logic)
  • HO2S heater circuit
  • HO2S
  • ECM