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Home >> Nissan-Datsun >> 2004 >> Sentra Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - QG18DE >> DTC P1146: Ho2S2 >> DTC Confirmation Procedure
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DTC Confirmation Procedure

NOTE: If DTC confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

TESTING CONDITION: 

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

With CONSULT-II 

  1. Start engine and warm it up to the 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 "HO2S2 (B1) P1146" of "HO2S2" in "DTC WORK SUPPORT" mode with CONSULT-II and follow the instruction of CONSULT-II.
    Fig 1: Displaying Instructions
    G00773044Courtesy of NISSAN MOTOR CO., U.S.A.
  6. Make sure that OK is displayed after touching "SELF-DIAG RESULTS".

    If NG is displayed, refer to DIAGNOSTIC PROCEDURE .

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

  1. Turn ignition switch OFF and leave the vehicle in a cool place (soak the vehicle).
  2. Turn ignition switch ON and select "COOLANTEMP/S" in "DATA MONITOR" mode with CONSULT-II.
  3. Start engine and warm it up while monitoring "COOLANTEMP/S" indication on CONSULT-II.
  4. When "COOLANTEMP/S" indication reaches to 70°C (158°F), go to step 3.