P0172 2014 3.5L Ecoboost? - F150online Forums

Notices

P0172 2014 3.5L Ecoboost?

Reply

 
 
 
  #1  
Old 04-13-2018, 11:12 PM
Junior Member
Thread Starter
Join Date: Aug 2010
Posts: 9
P0172 2014 3.5L Ecoboost?

Changed plugs. Long term fuel trim on both banks is going to -25 at idle. Both banks go normal when rpm's increase.

My OBD is showing catalyst = not passed, O2 sensor = not passed, O2 sensor heater = not passed.

Any suggestions? Much appreciated!

Where is MAF in this truck? I'd like to clean/test it.

I found the 3 MAP's and replaced one of them that tested bad.
 
Reply With Quote
  #2  
Old 04-13-2018, 11:39 PM
glc's Avatar
glc
glc is offline
Senior Member
Join Date: Dec 2006
Location: Joplin MO
Posts: 36,841
You don't have a MAF. You do have something that looks like a MAF, but it's an IAT sensor.
 
Reply With Quote
  #3  
Old 04-16-2018, 04:53 PM
Senior Member
Join Date: Sep 2002
Location: Cabot, AR
Posts: 2,161
P0172 is bank 1 rich condition. The MAP sensors are not able to tell bank 1 from bank 2. The furthest downstream is in the center of the intake manifold.

Can you check the duty cycle in injectors 1,2,3?
 
Reply With Quote
  #4  
Old 06-15-2018, 03:25 PM
BuiltFordTough!'s Avatar
Junior Member
Join Date: Jun 2018
Posts: 3
Originally Posted by glc View Post
You don't have a MAF. You do have something that looks like a MAF, but it's an IAT sensor.
So that's just a sensor checking the air temperature?
 
Reply With Quote
  #5  
Old 06-15-2018, 05:28 PM
glc's Avatar
glc
glc is offline
Senior Member
Join Date: Dec 2006
Location: Joplin MO
Posts: 36,841
Yes.
 
Reply With Quote
 
 
 


Thread Tools
Search this Thread
Quick Reply: P0172 2014 3.5L Ecoboost?


Sponsors

Archive Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: