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Home >> Kia >> 2012 >> Optima Hybrid >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (1 Of 2) - HEV >> DTC P0139: O2 Sensor Circuit Slow Response-Bank 1 Sensor 2 >> Inspection Repair >> System Inspection >> Exhaust System Inspection
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Exhaust System Inspection

  1. Check the exhaust system for an exhaust leak near the engine.
  2. Was an exhaust leak found?

    YES 

    NO 

    • Go to next step as below.