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Home >> Hyundai >> 2009 >> Accent GLS, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> DTC Troubleshooting Procedures (1 Of 2) >> P0139 O2 Sensor Circuit Slow Response (Bank 1/Sensor 2) >> DTC Detecting Condition

P0139 O2 Sensor Circuit Slow Response (Bank 1/Sensor 2): DTC Detecting Condition

DTC P0139 DETECTING CONDITION TABLE

Item Detecting Condition Possible Cause
DTC Strategy
  • Response rate
  • Poor connection
  • Leak or clog in intake air system
  • Injector
  • Fuel pressure
  • B1S2
  • ECM/PCM
Enable Conditions
  • Time after fuel cut-off > 5 s
  • Integrated air mass after fuel cut-off > 15 g (0.53 oz.)
  • Time after dew point end detected > 30 s
Threshold Value
  • B1S2 sensor voltage > 0.15 V
Diagnostic Time
  • 0.2 sec
MIL ON Condition
  • 2 driving cycle
B1S1: upstream oxygen sensor/B1S2: downstream oxygen sensor
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