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Home >> Kia >> 2017 >> Optima Plug-In Hybrid EX >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (1 Of 3) (PHEV) >> DTC P0135-00: O2 Sensor Heater Circuit (Bank 1 Sensor 1) >> DTC Information >> DTC Detecting Condition
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DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Evaluate Upstream O2 Sensor Heater performance
  1. Poor Connector Connection
  2. Faulty related fuse
  3. Open/Short in Power Circuit
  4. Open/Short in Heater Control Circuit
  5. Faulty Upstream O2 Sensor
Enable Conditions
  • Battery voltage higher than 10V and lower than 16V
  • Upstream O2 sensor normal heating time is greater than 2s
Threshold Value
  • Upstream O2 sensor tip Temp. lower than 1, 391°F (755°C)
Diagnostic Time
  • 1s
MIL ON Condition
  • 2 Driving Cycles
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