LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2004 >> M45 >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> DTC P1148, P1168: Closed Loop Control >> DTC Confirmation Procedure >> With CONSULT-II
April 5, 2026: LEMON Manuals is launched! Read the announcement.

With CONSULT-II

  1. Start engine and warm it up to normal operating temperature.
  2. Turn ignition switch OFF and wait at least 10 seconds,
  3. Select "DATA MONITOR" mode with CONSULT-II.
    Fig 1: Scan Tool Display - Data Monitor
    G00796354Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 2: Inspection Chart
    G00796355Courtesy of NISSAN MOTOR CO., U.S.A.
  4. Hold engine speed at 2,000 RPM and check one of the following.
    • "HO2S1 (B1)/(B2)" voltage should go above 0.70V at least once.
    • "HO2S1 (B1)/(B2)" voltage should go below 0.21V at least once.

      If the check result is NG, perform DIAGNOSTIC PROCEDURE .

      If the check result is OK, perform the following step.

  5. Let engine idle at least 5 minutes.
  6. Maintain the following condition at least 50 consecutive seconds.

    During this test, P0132 and/or P0152 may be displayed on CONSULT-II screen.

  7. If DTC is detected, go to DIAGNOSTIC PROCEDURE .
scientia non olet · About LEMON Manuals