Originally posted by n4rb:
My CEL is on, so I went to Auto Zone today so I know what error codes there are, well, it had two,

P0171 and P0174

meaning:

P0171 = System too Lean (Bank No. 1)
P0174 = System too Lean (Bank No. 2)

Could any1 tell me what this means and how I can fix that? thanks :-x

P.S.: Its a 99 Ford Contour SVT



Having both banks lean is a bit different than just one lean code.

Clean the MAF and check for vacuum leaks. If you don't have any luck check the fuel pressure. The fuel filter, pump, and control can all cause fuel pressure problems.

"Those who cannot remember the past are condemned to repeat it" -George Santayana