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Home >> Hyundai >> 2018 >> Kona Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 151 (Engine Control System Diagnosis - 2.0L (3 Of 3)) >> DTC P2270-00: O2 Sensor Signal Stuck Lean (Bank 1 / Sensor 2) >> Component Inspection >> Check HO2S

Check HO2S

WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
  1. Visually/physically inspect the following conditions:
    • Ensure that the sensor is securely installed
    • Check for corrosion on terminals
    • Check for damaged wiring
    • Repair as necessary and go to next step
  2. Warm up the engine to normal operating temperature and let it idle.
  3. Connect Scantool and monitor the O2 SNSR VOL.-B1/S2 parameter on the Scantool data list.

    Specification:  Above 0.7V at idle

  4. Is sensor data near the specified value?

    YES 

    • Check for poor connection between PCM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure

    NO 

    • Check HO2S for contamination, deterioration, or damage. Substitute with a known-good HO2S and check for proper operation. If the problem is corrected, replace HO2S and then go to "VERIFICATION OF VEHICLE REPAIR " procedure
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