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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 1430 (Engine Control System) >> DTC P0101: MAF Sensor >> DIAGNOSTIC TROUBLE CODES Confirmation Procedure >> With CONSULT-II
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With CONSULT-II

WARNING: This page is about a different car, the 2005 Nissan 350Z. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition switch ON.
  2. Select "DATA MONITOR" mode with CONSULT-II.
  3. Start engine and warm it up to normal operating temperature.
  4. Run engine for at least 10 seconds at idle speed.
  5. If 1st trip DTC is detected, go to , "DIAGNOSTIC PROCEDURE "
    Fig 1: Scan Tool Display "Data Monitor"
    G02401376Courtesy of NISSAN MOTOR CO., U.S.A.


  1. Turn ignition switch ON.
  2. Start engine and warm it up to normal operating temperature.

    If engine cannot be started, go to " DIAGNOSTIC PROCEDURE  ", 

  3. Select "DATA MONITOR" mode with CONSULT-II.
  4. Check the voltage of "MAS A/F SE-B1" with "DATA MONITOR",
  5. Increases engine speed to about 4, 000 RPM.
  6. Monitor the linear voltage rise in response to engine speed increases.

    If NG, go to . "DIAGNOSTIC PROCEDURE ".

    If OK, go to following step.

    Fig 1: Voltage Graph
    G02401377Courtesy of NISSAN MOTOR CO., U.S.A.
  7. Maintain the following conditions for at least 10 consecutive seconds.
    ENGINE SPEED REFERENCE

    ENG SPEED More than 2, 000 rpm
    THRTL SEN 1 More than 3V
    THRTL SEN 2 More than 3V
    Shift lever Suitable position
    Driving location Driving vehicle uphill (increased engine load) will help maintain the driving condtions required for this test.
  8. If 1st trip DTC is detected, go to "DIAGNOSTIC PROCEDURE "
    Fig 2: Scan Tool Display "Data Monitor"
    G02401378Courtesy of NISSAN MOTOR CO., U.S.A.