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Home >> Nissan-Datsun >> 2017 >> Versa Note SL >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (2 Of 3) >> DTC/Circuit Diagnosis >> DTC P0139: Ho2S2 >> DTC Logic >> DTC Confirmation Procedure

DTC Confirmation Procedure

  1. DTC PRIORITY

    If DTC P0139 is detected with DTC P0137 or P0138 perform trouble diagnosis for DTC P0137 or P0138.

    Is applicable DTC detected?

    YES 

    Perform diagnosis of applicable. Refer to DTC INDEX .

    NO 

    GO TO STEP 2  .

  2. INSPECTION START

    Do you have CONSULT?

    Do you have CONSULT?

    YES 

    GO TO STEP 3  .

    NO 

    GO TO STEP 7  .

  3. 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 STEP 4  .

  4. PERFORM DTC CONFIRMATION PROCEDURE

    G-20 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 "COOLANT TEMP/S" indicates more than 70°C (158°F).

      If not, warm up engine and GO TO  next step when "COOLANT 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 STEP 6  .

    NO 

    GO TO STEP 5  .

  5. 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 STEP 4  .

  6. PERFORM SELF - DIAGNOSIS

    G-20 With CONSULT

    Perform ECM self-diagnosis.

    Is DTC "P0139" detected?

    YES 

    Proceed to DIAGNOSIS PROCEDURE .

    NO 

    INSPECTION END

  7. 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 .

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