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Thread: P2197, P0171, P0174 Codes
06-23-2009, 07:54 PM #1
P2197, P0171, P0174 Codes
Well, my cars engine light came on, here are the codes.
The car just started to idle high yesterday and also idles a bit rough. I have noticed a bit of power loss under WOT pulls in 3rd and 4th over the last week. Any assistance on the fix would be greatly appreciated.
I did get a COP wet once and had to take the plug cover off and dry it. Other than that never had any electrical issues.
Car has 92k on it, I just replaced the K&N Filter 2 days ago and the plugs were changed about 20k-30k ago as well as the fuel filter.
I haven't cleaned the MAF in a long while. Edit: The rear O2 sensors are turned off in my tune.
Mods are in the sig.
Last edited by PowerWheels; 06-23-2009 at 09:17 PM.2014 GT500
Airaid Synthetic Filter, Ford Resonator Delete, JLT Passenger Side Oil Separator, Yeager Bros Front Gravel Guards, Driver Mod.
06-23-2009, 09:24 PM #2
Been researching, I'm going to clean the MAF and look for any obvious vacum leaks, where I have no idea, andy suggestions?
06-23-2009, 09:37 PM #3
P0171-System Too Lean (Bank 1)
P0174-System Too Lean (Bank 2)
06-24-2009, 07:05 AM #4
DTC: p2197 Ford says the cause may be an engine vacuum leak, possibly around the PCV valve or in the PCV vacuum plumbing. Such a leak may set the following DTC: P2197. The code may indicate a lean fuel condition or a lack of heated oxygen sensor (HEGO) switching. Ford says not to replace the oxygen sensor, MAF sensor or PCM because the cause may only be a vacuum leak or an incorrect sized PCV valve that flows too much air.
I`d look for a vacuum leak
06-24-2009, 07:32 AM #5
06-24-2009, 07:37 AM #6
06-24-2009, 02:09 PM #7
The PCV tube going from the valve cover to the intake is fine. What's next.
06-24-2009, 02:31 PM #8
- Join Date
- July 2004
06-24-2009, 06:21 PM #9
I've reset it and it comes back, plus it's not running correctly. Going to clean the MAF tonight, i don't expect it to help, but it won't hurt.
Last edited by PowerWheels; 06-24-2009 at 06:32 PM.
06-24-2009, 08:03 PM #10
Well cleaned the MAF and a few electrical plugs. Now I'm pissed, the plug that goes to the A/C broke. Off to Ford to buy another in the AM, I'm probably just going to let them look at it.
06-27-2009, 11:20 PM #11
Did take it to them, and you guys were right, a hose behind the S/C was letting air in. Wish I would have found it myself, but it's running great now.
06-28-2009, 06:00 AM #12
06-28-2009, 11:38 AM #13