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Error Codes P0171 and P0174 #1030619 08/20/04 09:37 PM
Joined: Aug 2004 Posts: 50 Summerville, SC N n4rb OP CEG\'er
OP n4rb CEG\'er N Joined: Aug 2004 Posts: 50 Summerville, SC	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 1999 Contour SVT

Re: Error Codes P0171 and P0174 #1030620 08/20/04 09:45 PM
Joined: Mar 2002 Posts: 496 NJ E eepals_dup1 CEG\'er
eepals_dup1 CEG\'er E Joined: Mar 2002 Posts: 496 NJ	I typed P0171 in the "SEARCH" box. There are many posts on this code.

Re: Error Codes P0171 and P0174 #1030621 08/20/04 10:03 PM
Joined: Oct 2002 Posts: 2,408 R Rogerm60 Hard-core CEG'er
Rogerm60 Hard-core CEG'er R Joined: Oct 2002 Posts: 2,408	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

Re: Error Codes P0171 and P0174 #1030622 08/21/04 03:37 AM
Joined: Sep 2003 Posts: 2,725 Grand Rapids, Michigan - Chica... H HITMANinMI Hard-core CEG\'er
HITMANinMI Hard-core CEG\'er H Joined: Sep 2003 Posts: 2,725 Grand Rapids, Michigan - Chica...	Vacuum/intake leaks when both codes are present.

Re: Error Codes P0171 and P0174 #1030623 08/21/04 11:29 AM
Joined: Jun 2004 Posts: 58 Newnan Ga K kevmic28 CEG\'er
kevmic28 CEG\'er K Joined: Jun 2004 Posts: 58 Newnan Ga	I just had the same problem. Turned out to be the air bypass hose. The bottom half of the hose was completely torn off and was just being held on by the top. Visual inspection didnt help either. It wasnt until I touched it that it just fell off. So definatley check your hoses and vacuum lines. The right thing to do. VOTE BUSH!!!!

Re: Error Codes P0171 and P0174 #1030624 08/23/04 07:55 PM
Joined: Sep 2001 Posts: 57 C ConnContour_dup1 CEG\'er
ConnContour_dup1 CEG\'er C Joined: Sep 2001 Posts: 57	I just had the same problem also. Check the hose next to the PCV valve. Mine was cracked.

Re: Error Codes P0171 and P0174 #1030625 10/02/04 04:18 AM
Joined: Jul 2001 Posts: 2,728 Michigan R RyeLou Hard-core CEG\'er
RyeLou Hard-core CEG\'er R Joined: Jul 2001 Posts: 2,728 Michigan	Originally posted by ConnContour: I just had the same problem also. Check the hose next to the PCV valve. Mine was cracked. Where is this hose exactly? I'm getting the exact same codes after a weekend of mod's. '03 SRT-4 50 trim turbo + support

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