hi i have a 2003 f-250 with a 5.4 triton. the check engine light came on and the codes are P0171 and P0174. I checked on alldata and it says something to do the powertrain control module. Do you guys know of any specific things that would cause this codes to come up? thanks alot, mike

 

My DTC library shows:

P0171 - System Too Lean (Bank 1)
P0174 - System Too Lean (Bank 2)

Im sure someone will chime in who has had these codes before.

Do you have any other symptoms other than the CEL?

 

Also, try this thread, has some good info:

https://www.ford-trucks.com/forums/9...eak-fixed.html