Code PO174 dianosis

Tiny
MARYDARLINE
  • 2002 FORD F-150
  • 6 CYL
  • 2WD
  • AUTOMATIC

In a 2002 ford f150 4.2 6 cyl, we are getting a 174 code indicating bank 2 is running lean. Could this be cause by the O2 sensor, maf or pcv vale being clogged. Please help as we are getting too many answers as to why this code keeps coming up once we have cleared it.

SPONSORED LINKS
Do you
have the same problem?
Yes
No
Saturday, November 13th, 2010 AT 4:09 PM

2 Replies

Tiny
WRENCHTECH
  • EXPERT
  • 20,812 POSTS

That's because there are dozens of causes for a lean code. The surprising thing is that you are not also getting a PO171 for the other bank. I have found that on Fords it's nearly always caused by a sever vacuum leak, usually from one of the main rubber vacuum lines

SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Saturday, November 13th, 2010 AT 4:17 PM
Tiny
MARYDARLINE
  • MEMBER

Originally(2 wks ago) we did get the PO171, but it has since cleared by disconnecting the neg term on the battery and not returned.

Was this
answer
helpful?
Yes
No
Saturday, November 13th, 2010 AT 7:57 PM

Please login or register to post a reply.

Related P0174 Content

VIEW MORE

Recommended Guides