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Home >> Hyundai >> 2019 >> Santa Fe SEL Plus, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis - 2.4L (1 Of 3) >> DTC P0139-00: O2 Sensor Circuit Slow Response (Bank 1/Sensor 2) >> Troubleshooting >> Terminal and Connector Inspection

Terminal and Connector Inspection

  1. Many malfunctions in the electrical system are caused by poor harness and terminals.

    Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.

  2. Thoroughly check all connectors (and connections) for looseness, bending, corrosion, contamination, deterioration, and/or damage.
  3. Has a problem been found?

    YES 

    NO 

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