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Home >> Kia >> 2012 >> Sorento Base, 2.4L Eng VIN 1, Standard Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis - 2.4L GDI (1 Of 3) >> DTC P0133: O2 Sensor Circuit Slow Response (Bank 1/Sensor 1) (VIN 6) >> Component Inspection

Component Inspection

  1. Inspect the front HO2S for any silicon contamination. This contamination will be indicated by a white powdery coating and will result in a bad false voltage signal.

    If contamination is evident on the HO2S, replace contaminated sensor with the new one and go to the next step.

  2. Is the sensor contaminated?

    YES 

    • Substitute with a known-good HO2S and check for proper operation. If the problem is corrected, replace HO2S and go to "Verification Of Vehicle Repair " procedure.

    NO 

    • Check for poor connection between PCM and component including: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "Verification Of Vehicle Repair " procedure.
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