U Umaña F New member Jun 16, 2009 #1 The engine light came on the other day on my 2001 Ford Ranger, and it says that "Insufficient Air Flow" (Code P0401) What do this mean? Where should I start looking?
The engine light came on the other day on my 2001 Ford Ranger, and it says that "Insufficient Air Flow" (Code P0401) What do this mean? Where should I start looking?
