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Home >> Nissan-Datsun >> 2014 >> Versa Note S Plus >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes & Symptom Tests) >> DTC/Circuit Diagnosis >> DTC P0139: Ho2S2 >> DTC Logic >> DTC Confirmation Procedure

DTC Confirmation Procedure

  1. INSPECTION START 

    Do you have CONSULT?

    Do you have CONSULT? 

    YES: GO TO 2.

    NO: GO TO  6.

  2. PRECONDITIONING 

    If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

    1. Turn ignition switch OFF and wait at least 10 seconds.
    2. Turn ignition switch ON.
    3. Turn ignition switch OFF and wait at least 10 seconds.

      TESTING CONDITION: 

      For better results, perform "DTC WORK SUPPORT" at a temperature of 0 to 30°C (32 to 86°F). 

      : GO TO 3.

  3. PERFORM DTC CONFIRMATION PROCEDURE 

    With CONSULT

    1. Start engine and warm it up to the normal operating temperature.
    2. Turn ignition switch OFF and wait at least 10 seconds.
    3. Turn ignition switch ON.
    4. Turn ignition switch OFF and wait at least 10 seconds.
    5. Start engine and keep the engine speed between 3, 500 and 4, 000 rpm for at least 1 minute under no load.
    6. Let engine idle for 1 minute.
    7. Select "DATA MONITOR" mode of "ENGINE" using CONSULT.
    8. Make sure that "COOLAN TEMP/S" indicates more than 70°C (158°F).

      If not, warm up engine and go to next step when "COOLAN TEMP/S" indication reaches to 70°C (158°F).

    9. Open engine hood.
    10. Select "HO2S2 (B1) P0139" in "DTC WORK SUPPORT" mode of "ENGINE" using CONSULT.
    11. Start engine and follow the instruction of CONSULT display.
      NOTE: It will take at most 10 minutes until "COMPLETED" is displayed.

      Is "COMPLETED" displayed on CONSULT screen? 

      YES: GO TO  5.

      NO: GO TO 4.

  4. PERFORM DTC CONFIRMATION PROCEDURE AGAIN 
    1. Turn ignition switch OFF and leave the vehicle in a cool place (soak the vehicle).
    2. Perform DTC confirmation procedure again.

      : GO TO  3.

  5. PERFORM SELF-DIAGNOSIS 

    With CONSULT

    Perform ECM self-diagnosis.

    Is DTC "P0139" detected? 

    YES: Proceed to "DIAGNOSIS PROCEDURE ".

    NO: INSPECTION END

  6. PERFORM COMPONENT FUNCTION CHECK 

    Perform component function check. Refer to "COMPONENT FUNCTION CHECK ".

    NOTE: Use component function check to check the overall function of the heated oxygen sensor 2 circuit. During this check, a 1st trip DTC might not be confirmed.

    Is the inspection result normal? 

    YES: INSPECTION END

    NO: Proceed to "DIAGNOSIS PROCEDURE ".