P0174 Code - HELP!!!

[ssobel80]

Here is all the information my Innova 3040 Scanner gave me, maybe someone else can make a little better sense of it than I can. It includes the freeze frame data

I am gonna clean the MAF now cause that is the most likely cause, but would love some more input!!



Vehicle:

2000 Ford Explorer

Date of Report:

10/9/2012 12:45:58 PM



Engine:

V6, 4.0L (244 CID); OHV 12V; EFI

Mileage Reported:

101400



DTCs
Engine/Transmission

Engine/Transmission Diagnostic Trouble Code Information


MIL DTC
P0174Fuel System Too Lean (Cylinder Bank 2)



Stored Codes
P0174Fuel System Too Lean (Cylinder Bank 2)



Pending Codes
P0171Fuel System Too Lean (Cylinder Bank 1)




Freeze Frame Information

Close Details

Parameter Description

Results



DTC for which Freeze Frame was Stored

P0174



Fuel System 1 Status
Closed Loop



Fuel System 2 Status
Not Supported



Calculated LOAD Value
61.18 %



Engine Coolant Temp
192.20 °F



Short Term Fuel Trim - Bank 1
-3.91 %



Long Term Fuel Trim - Bank 1
6.25 %



Short Term Fuel Trim - Bank 2
1.56 %



Long Term Fuel Trim - Bank 2
3.91 %



Engine RPM
1,988.75 rpm



Vehicle Speed Sensor
24.23 mph

 

[jremington59]

•In the vast majority of cases, simply cleaning the MAF sensor does the trick. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling.

•Inspect all vacuum and PCV hoses, replace if necessary.

•Check for a dirty fuel filter and proper fuel pressure.

 

[waskly]

check the hoses to the throttle body.

from the pids you posted, its not running lean on bank 1 or 2 from freeze frame.

clear it and drive it, does it reset?

 

[ssobel80]

I have cleared it and it has come back on a few days later. I cleaned the MAF and couldn't see any visible cracks in lines anywhere. I will see if it comes back again.

 

[waskly]

i would check fuel pressure unload load, it could be dropping out or the pump is worn causing this.

 

[ssobel80]

So I reset it. CEL stayed off for a few days and now I have a p0171 code!!

 

[ssobel80]

Fuel pressure is 65-67. So it shouldn't be the fuel pump. I decided to change the fuel filter but ran into a new problem. Maybe somebody could help with this?

http://www.explorerforum.com/forums/showthread.php?t=372240