WHAT IS THE SOLUTION TO CHECK ENGINE CODES P0171 & P0174 'O2 HYUNDAI SANTA FE

Asked by Jan 04, 2017 at 06:12 PM about the 2002 Hyundai Santa Fe LX

Question type: Maintenance & Repair

Car runs great at idle in gear, out of gear with load and normal driving. no
hesitation or sputter. Runs normal. no change with "check engine" light on or
off. It is using more gas than usual. cleaned Mass Air sensor unit, air filter,  
checked for intake  and vacuum leaks negative reults.  

3 Answers

73,655

P0171 HYUNDAI - System Too Lean Bank 1... Possible causes - Intake air leaks - Faulty front heated oxygen sensor - Ignition misfiring - Faulty fuel injectors - Exhaust gas leaks - Incorrect fuel pressure - Lack of fuel - Faulty Mass Air Flow (MAF) sensor - Incorrect Positive Crankcase Ventilation (PCV) hose connection. If the P0171 is combined with the P0174 code, it's very likely that the problem is caused by an intake leak. If there are no intake leaks, the next step is to replaced the air filter and clean the air flow meter. If the problem persist the front oxygen (O2) sensor may need to be replaced.......P0174 HYUNDAI - System Too Lean Bank 2... Possible causes - Intake air leaks - Faulty front heated oxygen sensor - Ignition misfiring - Faulty fuel injectors - Exhaust gas leaks - Incorrect fuel pressure - Lack of fuel - Faulty Mass Air Flow (MAF) sensor - Incorrect Positive Crankcase Ventilation (PCV) hose connection... If the P0171 is combined with the P0174 code, it's very likely that the problem is caused by an intake leak. If there are no intake leaks, the next step is to replaced the air filter and clean the air flow meter. If the problem persist the front oxygen (O2) sensor may need to be replaced.

3 of 3 people found this helpful.

To Rowefast, I just want to thank you for your answer to my question. I purchased the three O2 sensors and am having them replaced. My mechanic said thank you also for confirming his answer. I checked with car gurus to see if there were any uther suggestions if that wasn't it. In short, THANK YOU WHOLE HEARTEDLY. OMPADAN

73,655

You just made my day! I like doing this stuff and it is nice to know that it matters, and helps people. Thank you.

1 of 1 people found this helpful.

Your Answer

Santa Fe

Looking for a Used Santa Fe in your area?

CarGurus has 13,707 nationwide Santa Fe listings starting at $1,995.

ZIP:

Hyundai Santa Fe Experts

  • #1
    LouB
    Reputation
    3,540
  • #2
    me29
    Reputation
    3,420
  • #3
    cargurus55
    Reputation
    1,040
View All

Related Models For Sale

Used Kia Sorento
460 Great Deals out of 28,542 listings starting at $1,999
Used Honda CR-V
788 Great Deals out of 53,406 listings starting at $1,750
Used Toyota Highlander
427 Great Deals out of 26,332 listings starting at $1,999
Used Toyota RAV4
797 Great Deals out of 50,432 listings starting at $1,500
Used Honda Pilot
468 Great Deals out of 29,312 listings starting at $1,444
Used Hyundai Sonata
717 Great Deals out of 49,081 listings starting at $790
Used Ford Explorer
804 Great Deals out of 62,574 listings starting at $1,000
Used Ford Escape
1,026 Great Deals out of 85,209 listings starting at $1,288
Used Nissan Murano
318 Great Deals out of 23,727 listings starting at $1,500
Used Nissan Pathfinder
321 Great Deals out of 24,396 listings starting at $1,000

Used Cars For Sale

2018 Hyundai Santa Fe For Sale
888 listings starting at $28,130
2017 Hyundai Santa Fe For Sale
43 Great Deals out of 6,270 listings starting at $17,591
2016 Hyundai Santa Fe For Sale
14 Great Deals out of 348 listings starting at $14,999
2015 Hyundai Santa Fe For Sale
13 Great Deals out of 269 listings starting at $14,977
2014 Hyundai Santa Fe For Sale
20 Great Deals out of 525 listings starting at $12,567

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.