Trouble shoot codes p0113, p0171, p0174, and p0304

Asked by Mar 19, 2015 at 08:04 PM about the 2001 Ford F-150 XL LB

Question type: Maintenance & Repair

I need to know where is the IAT  
sensor located on my vehicle. Also I
just replaces the fuel pump and filter
and also the power steering pump. But
codes coming up say System to Lean
Bank 1 and one for Bank 2 Also says
misfire on cylinder 4 so I went ahead
and purchased new spark plugs for it
cuz I'm sure they need to be replaced
already again. The p0171 code has
been going on for a little while since
about last July to be honest but the
other codes are all new and I don't
know what any of them mean.. I am a
female and am just learning how to
deal with the vehicle maintenence
myself now.  Please be patient with
me..

1 Answer

22,070

Those codes normally indicate a problem with an oxygen sensor. Also, do not unhook the battery to erase the codes, go to a place like autozone and have the codes erased with a scanner. The PCM has to relearn everything and the codes are not erased from memory when the battery is disconnected.

Your Answer

Ford F-150 Experts

  • #1
    OJ
    Reputation
    9,960
  • #2
    dandyoun
    Reputation
    4,690
  • #3
    tennisshoes
    Reputation
    3,420
View All

Related Models For Sale

Used Chevrolet Silverado 1500
2,684 Great Deals out of 157,126 listings starting at $1,000
Used GMC Sierra 1500
1,120 Great Deals out of 61,765 listings starting at $1,295
Used Ford F-250 Super Duty
442 Great Deals out of 47,648 listings starting at $695
Used Toyota Tundra
627 Great Deals out of 36,313 listings starting at $1,500
Used Dodge Ram 1500
325 Great Deals out of 10,738 listings starting at $1,988
Used Toyota Tacoma
550 Great Deals out of 41,423 listings starting at $2,500
Used Ford Mustang
341 Great Deals out of 42,380 listings starting at $1,488
Used Ford F-350 Super Duty
401 Great Deals out of 27,164 listings starting at $3,900
Used Chevrolet Silverado 2500HD
440 Great Deals out of 31,400 listings starting at $2,500
Used Chevrolet Tahoe
822 Great Deals out of 40,012 listings starting at $1,700
Used Ford Explorer
1,112 Great Deals out of 68,286 listings starting at $1,200

Used Cars For Sale

2018 Ford F-150 XL LB For Sale
291 listings starting at $21,485
2017 Ford F-150 XL LB For Sale
25 listings starting at $20,922
2016 Ford F-150 XL LB For Sale
10 listings starting at $16,998
2015 Ford F-150 XL LB For Sale
3 listings starting at $11,990
2014 Ford F-150 XL LB For Sale
80 listings starting at $9,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.