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Home >> Infiniti >> 2010 >> M45 x >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS U0101 To P0159 >> DTC P0138, P0158 Ho2S2 >> DTC Confirmation Procedure >> Procedure For Malfunction A >> With CONSULT-III
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With CONSULT-III

TESTING CONDITION: 

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

  1. Start engine and warm it up to normal operating temperature.
  2. Turn ignition switch OFF and wait at least 10 seconds.
  3. Start engine and keep the engine speed between 3, 500 and 4, 000 RPM for at least 1 minute under no load.
  4. Let engine idle for 1 minute.
  5. Select "COOLAN TEMP/S" in "DATA MONITOR" mode with CONSULT-III.
  6. Check that "COOLAN TEMP/S" indication is more than 70°C (158°F).

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

  7. Open engine hood.
  8. Select "HO2S2 (B1) P1146" (for DTC P0138) or "HO2S2 (B2) P1166" (for DTC P0158) of "HO2S2" in "DTC WORK SUPPORT" mode with CONSULT-III.
  9. Follow the instructions displayed.
    NOTE: It will take at most 10 minutes until "COMPLETED" is displayed.
  10. Check that "OK" is displayed after touching "SELF-DIAG RESULTS".

    If "NG" is displayed, go to "DIAGNOSIS PROCEDURE ".

    If "CAN NOT BE DIAGNOSED" is displayed, perform the following procedure.

    1. Turn ignition switch OFF and leave the vehicle in a cool place (soak the vehicle).
    2. Return to step  1.
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