How many o2 sensors on my explorer?

Asked by Nov 30, 2015 at 04:38 PM about the 2003 Ford Explorer

Question type: Maintenance & Repair

I have two codes on it.. p0171 and p0174

2 Answers

251,245

Those codes are not O2 specific, they spell out that you have a vacuum leak and or lean condition. Check your air hoses off the intake and gaskets for an air leak after the MAF sensor.

2 of 2 people found this helpful.
6,625

The explorer was known for the j shaped vacumn hose from the passenger side of the engine just behind the throttle body and runs around to the back of the intake to degrade and suck a hole in them near the front of the engine. Listen for a hiss noise while the engine is running you will probably find that the lean codes are caused by this hose sucking air.

1 of 1 people found this helpful.

Your Answer

Ford Explorer Experts

  • #1
    OJ
    Reputation
    10,740
  • #2
    Tom Demyan
    Reputation
    4,360
  • #3
    tennisshoes
    Reputation
    2,450
View All

Related Models For Sale

Used Jeep Grand Cherokee
876 Great Deals out of 71,275 listings starting at $995
Used Ford Expedition
382 Great Deals out of 21,775 listings starting at $1,500
Used Chevrolet Tahoe
629 Great Deals out of 36,905 listings starting at $1,800
Used Ford F-150
2,192 Great Deals out of 182,393 listings starting at $1,000
Used Dodge Durango
274 Great Deals out of 20,370 listings starting at $999
Used Toyota Highlander
438 Great Deals out of 24,950 listings starting at $2,299
Used Ford Escape
1,115 Great Deals out of 85,005 listings starting at $999
Used Honda Pilot
424 Great Deals out of 25,669 listings starting at $1,491
Used Toyota 4Runner
238 Great Deals out of 21,543 listings starting at $2,300
Used Nissan Pathfinder
307 Great Deals out of 24,033 listings starting at $2,500
Used GMC Yukon
421 Great Deals out of 20,942 listings starting at $2,000
Used Ford Explorer Sport Trac
65 Great Deals out of 1,812 listings starting at $1,500

Used Cars For Sale

2017 Ford Explorer For Sale
48 Great Deals out of 37,325 listings starting at $24,285
2016 Ford Explorer For Sale
90 Great Deals out of 3,541 listings starting at $15,310
2015 Ford Explorer For Sale
196 Great Deals out of 5,383 listings starting at $11,250
2014 Ford Explorer For Sale
209 Great Deals out of 5,402 listings starting at $9,850
2013 Ford Explorer For Sale
82 Great Deals out of 2,764 listings starting at $9,474

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.