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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 412 (Engine Control System) >> DTC P0171, P0174: Fuel Injection System Function >> Diagnostic Procedure >> 7. Check Mass Air Flow Sensor >> With Consult-II

With 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. Install all removed parts.
  2. Check "MASS AIR FLOW" in "DATA MONITOR" mode with CONSULT-II.

    3.8 - 5.2 g.m/sec: at idling 

    16.0 - 21.5 g.m/sec: at 2,500 RPM 

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