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Home >> Hyundai >> 2017 >> Sonata Plug-In Hybrid >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (PHEV) (3 Of 3) >> DTC P2195: O2 Sensor Signal Stuck Lean (Bank 1 / Sensor 1) >> Component Inspection >> Component Inspection - Linear

Component Inspection - Linear

■ Check HO2S 

  1. Visually/physically inspect the following items:
    • Ensure that the HO2S is securely installed.
    • Silicon contamination. This contamination will be indicated by a white powdery coating on the portion of the sensor exposed to the exhaust stream and this will result in a but false (high) voltage signal
    • Fuel, engine coolant or oil contamination
    • Use of improper sealant
    • If contamination is evident on the HO2S, Fix the source of the sensor contamination before replacing the sensor to prevent future contamination. Go to "Verification of Vehicle Repair " procedure.
  2. Was a problem found in any of the above areas?

    YES 

    NO 

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