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Home › Kia › 2012 › Optima Hybrid › Repair and Diagnosis › Engine Performance › System › Engine Control System Diagnosis (1 Of 2) - HEV › DTC P0133: O2 Sensor Circuit Slow Response-Bank 1 Sensor 1 › General Information › DTC Detecting Condition

General Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Check HO2S Signal Amplitude
  1. Leak in intake or exhaust system.
  2. Poor connection or damaged harness
  3. HO2S contamination
Enable Conditions
  • see catalyst diagnosis (P0420) activation condition
  • No relevant failure
  • 11V
Threshold Value
  • Integral (Lambda signal amplitude measured / Lambda signal amplitude of a slow sensor) > 1.0
Diagnostic Time
  • 25 lambda controller cycle
Mil On Condition
  • 2 Driving Cycles
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