Ford F-150 Super Crew Code
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New User
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Ford F-150 Super Crew Code
Hi All,
I have a 2005 Ford F150 Super crew with the 5.4 L Triton. Came home tonight with a rough running engine and got a code "PO174 System too lean bank 2".
Whats wrong? Is this a fuel control problem?
Thanks in advance!
I have a 2005 Ford F150 Super crew with the 5.4 L Triton. Came home tonight with a rough running engine and got a code "PO174 System too lean bank 2".
Whats wrong? Is this a fuel control problem?
Thanks in advance!
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New User
Joined: Apr 2010
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Good point, it has 92,000 miles on it and has been trouble free.
Still getting the PO174 code and also "cyl 5 misfire"
Just replaced the coil and plug on what I believe is the #5 cyl. (drivers side front). No change. Is the drivers side front #5?
Still getting the PO174 code and also "cyl 5 misfire"
Just replaced the coil and plug on what I believe is the #5 cyl. (drivers side front). No change. Is the drivers side front #5?
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New User
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Yes that's correct, I just arrived in Stockholm so I was just trying to get the truck running until I got back. But I still have a misfire and the analyzer says its a misfire on #5 cyl.
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Senior User
Joined: Feb 2003
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Wow, I can not say that I would have tried that but your situation was unique.
Now for #5, I understand that the COP connector contacts are very easy to bend. You may want to give that some close inspection.
Now for #5, I understand that the COP connector contacts are very easy to bend. You may want to give that some close inspection.
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Okay I'm back and checked everything and still have a misfire on number 5. I replaced the coil and spark-plug, no good. I just want to confirm that the number 5 cyl. is the DRIVER SIDE FRONT of the engine? Is this correct?
Elder User
Joined: Jul 2008
Posts: 554
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From: Newport, Wa.
I see where you have replaced the cop and the plug on number 5 cylinder, but have you thought about a bad or fouled fuel injector? You are in Stokholm? Try running some fuel injector cleaner through the system. Let us know the results.
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It pays to talk to old guys!
Thanks!!
Resident smarta$$
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From: Oaks,PA
P0174 - System Too Lean (Bank 2)
Description:
See the description for DTC P0171.
Possible Causes:
See the possible causes for DTC P0171.
Diagnostic Aids:
See the diagnostic aids for DTC P0171.
All — — GO to Pinpoint Test H.
Application Key On Engine Off Key On Engine Running Continuous Memory
All — — GO to Pinpoint Test H.
P0171 - System Too Lean (Bank 1)
Description:
The adaptive fuel strategy continuously monitors the fuel delivery hardware. The test fails
when the adaptive fuel tables reach a rich calibrated limit. Refer to Section 1,
Powertrain
Control Software
Fuel Trim for more information.
Possible Causes:
Fuel System:
•
Ethanol content in the fuel
•
Fuel filter plugged or dirty
•
Damaged or worn fuel pump
•
Leaking fuel pump check valve
•
Leaking or contaminated fuel injectors
•
Low fuel pressure or running out of fuel
•
Evaporative emission (EVAP) canister purge valve is leaking when the canister is clean
•
Fuel supply line restricted
•
Fuel rail pressure (FRP) sensor bias
Exhaust System:
•
Exhaust leaks in the exhaust manifold gasket or mating gaskets before or near the heated
oxygen sensor (HO2S)
EGR System:
EGR System:
•
Vacuum hose disconnected on exhaust gas recirculation (EGR) system module (ESM)
applications
•
EGR valve tube or gasket leak
•
EGR vacuum regulator solenoid leak
Intake Air System:
•
Air leaks after the mass air flow (MAF) sensor
•
Vacuum leaks
•
Positive crankcase ventilation (PCV) system is leaking or the valve is stuck open
•
Incorrectly seated engine oil dipstick
•
Intake air turbulence due to incorrect air filter
•
Damaged or contaminated MAF sensor
Diagnostic Aids:
View the freeze frame data to determine the operating conditions when the DTC was set.
Observe the LONGFT1 and LONGFT2 PIDs. Refer to Section 2,
Adaptive Fuel Diagnostic
Trouble Code (DTC) Diagnostic Techniques
, for more information and the appropriate
All — — GO to Pinpoint
HTH- Tim
This is for 09-10 guessing the DTC's might still be the same?
pinpoint test for specific concern identification.
Application Key On Engine Off Key On Engine Running Continuous Memory
All — — GO to Pinpoint
HTH- Tim
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