U1262 - what part to replace for codes P0171 and P0174, banks 1 and 2 too lean?

Question

2002 Ford Windstar U1262 - what part to replace for codes P0171 and P0174, banks 1 and 2 too lean?

Answer 1

what part to replace for codes p0171 and p0174 banks 1 and 2 too lean?

Comments

Depends what make model and year is your vehicle. In some vehicles the problem is the an intake leak and other the problem is the mass air flow sensor.

Answer 2

There are a few things than can cause that problem, but the most common is the intake plenum gasket and seals.