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Home >> Hyundai >> 2018 >> Accent SE, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (1 Of 3) >> DTC P0135-00: O2 Sensor Heater Circuit (Bank 1/Sensor 1) >> Wiring Inspection >> Power Circuit Inspection

Power Circuit Inspection

  1. Turn the ignition switch "OFF" & Disconnect HO2S (S1) connector.
  2. Turn the ignition switch "ON" & ENG "OFF".
  3. Measure the voltage between signal terminal of HO2S (S1) harness connector and chassis ground.

    Specification:  Battery Voltage

  4. Is the measured voltage within specification?

    YES 

    NO 

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