SPONSORED LINKS

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
  • 20,272 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.

Similar Questions

1999 Ford F-150 F-150 Codes P0350 And P0174

Ok I replaced my plugs and cop's and fuel injectors about 4months ago and monday my check engine light came on I got the code p0305 I r
Asked by stevenjester ·
1 ANSWER

2000 Ford F150 Diagnostic Code 0171 & P0174

Engine performance problem 2000 ford f150 6 cyl two wheel drive manual 205000 miles my truck has many miles but has never caused
Asked by kasilee424 ·
1 ANSWER

Code P0174 Only

Use to set about 200 miles or so now less than 50. Idle sounds like a deisel rattling valves. Sets very fast if put under load. Found dry
Asked by wldman46 ·
1 ANSWER

2003 Ford F150 Codes P0171 And P0174

Computer problem 2003 ford f150 v8 two wheel drive automatic codes 0171 and 0174 returning. Replaced maf sensor and fuel psi. Ok
Asked by gftruck ·
1 ANSWER