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Home >> Infiniti >> 2004 >> QX56 RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1203 (Engine Control System) >> DTC P0037, P0038, P0057, P0058: Ho2S2 Heater >> Diagnostic Trouble Codes Confirmation Procedure >> With Consult-II

With Consult-II

WARNING: This page is about a different car, the 2005 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT-II.
  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 the engine and keep the engine speed between 3,500 RPM and 4,000 RPM for at least 1 minute under no load.
  5. Let engine idle for 1 minute.
  6. If 1st trip DTC is detected, go to "DIAGNOSTIC PROCEDURE "
    Fig 1: CONSULT-II Display - "DATA MONITOR" Mode
    G02384903Courtesy of NISSAN MOTOR CO., U.S.A.