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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 P0133-00: O2-Sensor Circuit Slow Response (Bank 1/Sensor 1) >> System Inspection >> Air Leakage Inspection
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Air Leakage Inspection

  1. Refer to appropriate service information and visually and/or physically inspect following conditions;
    • Vacuum hoses for splits, kinks and improper connections.
    • Exhaust system between O2 sensor and the Three way catalyst for air leakage.
    • EVAP system for leakage.
    • PCV hose for proper installation
  2. Has any problems been found?

    YES 

    NO 

    • Go to "Visual Inspection" procedure below.