cel Codes
Post Fiend
Joined: Jan 2003
Posts: 9,748
Likes: 16
From: Connecticut
See: Ford OBD-II Diagnostic Trouble Code (DTC) Descriptions
If an EGR hose is unplugged or has a hole in it (1405), that can cause both banks to run lean (171 and 174 are lean codes). So you want to check the hoses to and from the DPFE and the EGR valve itself.
If an EGR hose is unplugged or has a hole in it (1405), that can cause both banks to run lean (171 and 174 are lean codes). So you want to check the hoses to and from the DPFE and the EGR valve itself.
Thread
Thread Starter
Forum
Replies
Last Post
Norma stitz
6.0L Power Stroke Diesel
5
Oct 8, 2016 09:16 AM
westcoastslider
1994.5 - 1997 7.3L Power Stroke Diesel
10
Dec 7, 2011 02:10 PM
