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Home >> Hyundai >> 2007 >> Sonata SE >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (3.3L) (2 Of 2) >> DTC Troubleshooting Procedures >> DTC P2A00 O2 Sensor Not Ready (Bank 1 / Sensor 1) >> Monitor SCANTOOL Data

Monitor SCANTOOL Data

  1. Connect Scantool & Engine "ON"
  2. Warm up the engine to normal operating temperature.
  3. Monitor HO2S voltage (B1/S1) parameter on scantool

    Specification : Voltage will vary from 0.1 to 0.9 V

    Fig 1: Diagnosis Function Screen Display - O2 Voltage-B1S1
    G04891588Courtesy of HYUNDAI MOTOR CO.
  4. Is the HO2S parameter displayed within specifications ?

    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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