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Home >> Kia >> 2015 >> Optima Hybrid >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (1 Of 3) (HEV) >> DTC P0136: O2 Sensor Circuit-Bank 1 Sensor 2 >> Wiring Inspection >> Signal Circuit Inspection
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Signal Circuit Inspection

  1. Ignition "ON" & Engine "OFF".
  2. Measure voltage between signal terminal (Pin No. 1) of HO2S (B1S2) harness connector and chassis ground.

    Specification  : Approx. 0.4~0.5V

  3. Is voltage within the specification?

    YES 

    NO 

    • Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
      NOTE: HO2S must have a clean air reference to function properly. The air is obtained by way of the sensor wire (s). Do not attempt to repair the wire (s), connector, or the terminals.
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