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Home >> Kia >> 2008 >> Sedona Base >> Repair and Diagnosis >> Engine Performance >> System >> DTC Troubleshooting Procedures (1 Of 2) >> DTC P0159 Ho2S Circuit Slow Response (Bank 2/Sensor 2) >> Component Inspection

Component Inspection

  1. Visual Inspection of HO2S

    Visually/physically inspect following items:

    • Inspect the Rear HO2S for Contaminated, deteriorated or aged Rear HO2S
    • If contamination is evident on the HO2S, replace contaminated sensor
  2. Is the HO2S (B2S2) OK ?

    YES 

    • Substitute with a known-good PCM and check for proper operation. If the problem is corrected, replace PCM and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
    NOTE: There is a memory reset function on scan tool that can erase optional parts automatically detected and memorized by PCM.

    NO 

    • Substitute with a known-good HO2S (B2S2) and check for proper operation. If the problem is corrected, replace HO2S (B2S2) and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
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