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Home >> Hyundai >> 2015 >> Accent GLS, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 2) >> DTC P2270: O2 Sensor Stuck Lean - Bank 1 Sensor 2 >> Wiring Inspection >> Ground Circuit Inspection
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Ground Circuit Inspection

  1. IG "ON" and disconnect HO2S (B1/S2) connector.
  2. Measure voltage between signal terminal of HO2S (B1/S2) harness connector and chassis ground (Measurement "A").
  3. Measure voltage between signal and ground terminals of HO2S (B1/S2) harness connector (Measurement "B").

    Specification:  Voltage difference between measurement "A" and "B" is below 200mV.

  4. Is the measured voltage within specification?

    YES 

    NO 

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