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Home >> Nissan-Datsun >> 2004 >> Sentra Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - QG18DE >> DTC P1274: A/F Sensor 1 >> 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: 

Before performing the following procedure, confirm that battery voltage is more than 11V at idle. 

With CONSULT-II 

  1. Start engine and warm it up to normal operating temperature.
  2. Select "A/F SEN1 (B1) P1274" of "A/F SEN1" in "DTC WORK SUPPORT" mode.
  3. Touch "START".
  4. Maintain the following conditions continuously until "TESTING" changes to "COMPLETED". (It will take approximately 400 to 800 seconds.)
    NOTE: Keep the accelerator pedal as steady as possible.
    Fig 1: Testing Conditions Chart
    G00773163Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 2: Displaying A/F SEN1 (B1) P1274 Mode (1 Of 3)
    G00773164Courtesy of NISSAN MOTOR CO., U.S.A.

    If "TESTING" is not displayed after 20 minutes, retry from step 2. 

    Fig 3: Displaying A/F SEN1 (B1) P1274 Mode (2 Of 3)
    G00773165Courtesy of NISSAN MOTOR CO., U.S.A.
  5. Make sure that OK is displayed after touching "SELF-DIAG RESULTS".

    If NG is displayed, go to DIAGNOSTIC PROCEDURE .

    Fig 4: Displaying A/F SEN1 (B1) P1274 Mode (3 Of 3)
    G00773166Courtesy of NISSAN MOTOR CO., U.S.A.