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Home >> Nissan-Datsun >> 2003 >> Sentra SE-R, Automatic >> Repair and Diagnosis (Single Page) >> External Pages >> Different car >> Section 414 (Engine Control System - DTC) >> DTC P1274, P1284: A/F Sensor >> Diagnostic Procedure >> 3. Clear The Self-Learning Data >> Without CONSULT-II
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Without CONSULT-II

WARNING: This page is about a different car, the 2004 Nissan Maxima. 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.
  4. Restart engine and let it idle for at least 3 seconds.
  5. Stop engine and reconnect mass air flow sensor harness connector.
  6. Make sure DTC P0102 is displayed.
  7. Erase the DTC memory. Refer to , "HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFO ".
  8. Make sure DTC P0000 is displayed.
  9. 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 or P0175. Refer to "DTC P0172, P0175 FUEL INJECTION SYSTEM FUNCTION ".
  2. No: GO TO 4.
Fig 1: Locating MAF/IAT Sensor
G00877524Courtesy of NISSAN MOTOR CO., U.S.A.
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