[nonda Auto DIY Center] P0171 is one of the most common engine error codes, it stands for [System too Lean (Bank1)]. It indicates one of your bank has too much air and not enough fuel. Check out this self-repair video tutorial created by nonda's expert mechanics. Fix it yourself and save $$$ on your repair fees. Don't forget to claim your FREE ZUS Smart Vehicle Health Monitor here https://bit.ly/FreeZUSOBD and get an in-depth diagnosis of your vehicle condition. Don't forget to follow us, more a