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Home >> Kia >> 2009 >> Rio Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> DTC Troubleshooting Procedures (1 Of 2) >> DTC P0031 Ho2S Heater Circuit Low (Bank 1/Sensor 1) >> DTC Detecting Condition
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DTC P0031 Ho2S Heater Circuit Low (Bank 1/Sensor 1): DTC Detecting Condition

DTC DETECTING CONDITION AND POSSIBLE CAUSES

Item Detecting Condition Possible Cause
DTC Strategy
  • Heater check low
  • Poor connection
  • Short to ground in control circuit
  • B1S1
  • ECM/PCM
Enable Conditions  
Threshold Value
  • Short to ground
Diagnostic Time
  • Continuous
MIL ON Condition
  • 2 driving cycle
* B1S1: upstream oxygen sensor/B1S2: downstream oxygen sensor
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