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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 412 (Engine Control System) >> DTC P1146, P1166: Ho2S2 >> Diagnostic Procedure >> 2. Clear The Self-Learning Data >> Without CONSULT-II

Without CONSULT-II

WARNING: This page is about a different car, the 2004 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.
  1. Start engine and warm it up to normal operating temperature.
  2. Turn ignition switch OFF.
  3. Disconnect mass air flow sensor harness connector, and restart and run engine for at least 5 seconds at idle speed.
    Fig 1: Identifying MAF Sensor Harness Connector
    G00796326Courtesy of NISSAN MOTOR CO., U.S.A.
  4. Stop engine and reconnect mass air flow sensor harness connector.
  5. Make sure DTC P0102 is displayed.
  6. Erase the DTC memory. Refer to HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION .
  7. Make sure DTC P0000 is displayed.
  8. Run engine for at least 10 minutes at idle speed.

    Is the 1st trip DTC P0172 or P0175 detected? 

    Is it difficult to start engine? 

Yes or NO 

  1. Yes: Perform trouble diagnosis for DTC P0172, P0175. Refer to DTC P0172, P0175: FUEL INJECTION SYSTEM FUNCTION .
  2. No: GO TO 3.