LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Nissan-Datsun >> 2003 >> Sentra SE-R, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 403 (Engine Control System) >> DTC P0171, P0174: Fuel Injection System Function >> Diagnostic Procedure >> 7. Check Mass Air Flow Sensor >> With Consult-II
April 5, 2026: LEMON Manuals is launched! Read the announcement.

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