L Luis R New member Dec 4, 2009 #1 i scanned my 1997 Buick Regal GM and this code came up P0171 Fuel Trim System Lean (Bank 1 what exactly does this mean and how can i fix it plz let me know..
i scanned my 1997 Buick Regal GM and this code came up P0171 Fuel Trim System Lean (Bank 1 what exactly does this mean and how can i fix it plz let me know..
