2005 Ford F150 code PO174 - Engine ODB2 Fault Codes


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2005 Ford F150 code PO174

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Auto Repair Home>> Automotive Repair>> Engine ODB2 Fault Codes

Dave T
New User

Aug 10, 2015, 6:44 PM

Post #1 of 5 (2813 views)

2005 Ford F150 code PO174	Sign In

Drove thru a large puddle and car started running rough.
The check engine light came on.
I checked codes and it said misfire in cylinder 3.
Its done this before and self corrected.
I changed the plugs, wires and coil pack.
It still runs rough with engine light still on.
Now there's a PO174 code
System 2 lean bank 2
What am I missing?
Thanks in advance.

Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Aug 11, 2015, 4:48 AM

Post #2 of 5 (2786 views)

Re: 2005 Ford F150 code PO174	Sign In

Is it still misfiring on #3 cylinder? You need to figure out why it is misfiring before tacking the P0174 code.

Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on Aug 11, 2015, 4:48 AM)

Dave T
New User

Aug 11, 2015, 11:14 AM

Post #3 of 5 (2768 views)

Re: 2005 Ford F150 code PO174	Sign In

The misfire code isn't coming up now, but it's still running rough.
I'm at a loss

Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Aug 11, 2015, 5:41 PM

Post #4 of 5 (2759 views)

Re: 2005 Ford F150 code PO174	Sign In

Did the engine suck up any water from the puddle you went through?

The code may not come back for a while if it is still missing on that cylinder because you reset the monitors when you cleared the codes. Does it feel like a dead misfire? Does it miss all the time? Unplug each injector one at a time while the engine is idling and misfiring to figure out which cylinder(s) is misfiring. The one injector you unplug that doesn't make a change in the running of the engine is the one misfiring.

Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on Aug 11, 2015, 5:42 PM)

Dave T
New User

Aug 11, 2015, 9:37 PM

Post #5 of 5 (2746 views)

Re: 2005 Ford F150 code PO174	Sign In

Not sure where the engine would suck up water( air intake?)
But it's possible.
The water was at least 6 inches deep.
I will try disconnecting the injectors.
What other that plugs wires and coil pack would cause a misfire ?

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