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Home >> Infiniti >> 2008 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - DTCS U1000 To P0308 >> DTC P0138, P0158: Ho2S2 >> DTC Confirmation Procedure >> Procedure For Malfunction A >> With CONSULT-III

With CONSULT-III

  1. Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT-III.
  2. Start engine and warm it up to the normal operating temperature.
  3. Turn ignition switch OFF and wait at least 10 seconds.
  4. Start engine and keep the engine speed between 3, 500 and 4, 000 RPM for at least 1 minute under no load.
  5. Let engine idle for 2 minutes.
  6. Check 1st trip DTC.
  7. If 1st trip DTC is detected, go to "DIAGNOSIS PROCEDURE ".