p0171 and p0174 on 1998 explorer 4 litre efi

Question

what is problem if codes p0171 and p0174 on 1998 explorer 4 litre efi

Answer 1

HI there,

This code is for a lean condition on both banks of the engine. It means there is to little fuel to air mixture. Most often when we see the codes for both sides of the engine it is due to a bad mass air flow sensor or an issue with the fuel pump not delivering enough fuel volume.