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Home >> Hyundai >> 2002 >> XG350 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (1 Of 2) >> Diagnostic Tests >> DTC P0154: Ho2S Circuit No Activity Detected (Bank 2/Sensor 1) >> Scantool Diagnostics >> Monitor Scantool Data
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Monitor Scantool Data

  1. Connect Scantool & Engine "ON".
  2. Warm up the engine to normal operating temperature.
  3. Monitor the "HO2S VOLTAGE (B2S1)" parameter on scantool.
    1. Specification: Voltage will vary between 0.1 and 0.9V.
      Fig 1: Scantool Screen Display - HO2S Voltage (B2S1) Parameter
      G07325698Courtesy of HYUNDAI MOTOR CO.
  4. Is the signal waveform switching within specification?

    YES

    • Fault is intermittent caused by poor contact in the sensor's and/or PCM's connector or was repaired and PCM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO

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