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Home >> Hyundai >> 2017 >> Sonata Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 32 (Engine Control System Diagnosis - 2.0L (1 Of 3) (Except HEV)) >> DTC P0139: O2 Sensor Circuit Slow Response (Bank 1 Sensor 2) >> System Inspection >> Air Leakage Inspection

Air Leakage Inspection

WARNING: This page is about a different variant/trim than selected.
  1. Visually/physically inspect the following components:
    • Vacuum hoses for splits, kinks and improper connections.
    • Exhaust system between HO2S and Three way catalyst for air leakage
    • EVAP system for leakage
    • PCV hose for proper installation
  2. Was a problem found in any of the above areas?

    YES 

    NO 

    • Go to next step below.