P0171 and p0174

660

Asked by jims74camaro Jan 18, 2017 at 04:45 PM about the 2009 Kia Sportage LX V6 4WD

Question type: Maintenance & Repair

Smoke tested and found no leaks. I hooked up my
scan tool to check fuel trim and O2 sensors.
Everything seems normal except: stft b1 s2 (%) is
NA. Could this be the problem? Can someone
check this data to see if you notice anything off. I
am just learning how to check live data on my scan
tool. I need to get this car back on the road quick
and don't have time for classes LOL.

14 Answers

224,235

P0171 KIA - Bank 1 System Too Lean.... 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.....P0174 KIA - Bank 2 System Too Lean.... 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.

7 people found this helpful.
224,235

If the P0171 is combined with the P0174 code, it's very likely that the problem is caused by an intake leak. I am just learning how to read live data also, LOL.

660

I smoke tested the intake manifold and found no leaks. I should have specified I smoke tested the intake manifold. Forgot to finish that sentence. Mass air flow look good but I use a cleaner and cleaned it very carefully anyway. Exhaust leaks? An exhaust leak before the O2 sensor would cause fresh air Correct? But in this case I would have to have an exhaust leak before both front O2 sensors also correct? I do have a bad exhaust system.

1 people found this helpful.
660

Most of the stuff I've read says that if it's not the intake manifold is most likely an O2 sensor. Would you agree? Just want to 7rb pinpoint this a lot more before I spend money. And I would like to learn how to read this live data some also. Did you look at the pic I posted? What is with the (na)on the short turm fuel trim B1 S2?

2 people found this helpful.
660

Also can I post more than one pic on this site? I have two more live data shots I would like to post.

2 people found this helpful.
224,235

Yes you can keep posting a new picture, only one per response. I see this must be the 2.7L engine. How is the egr valve, system and gasket?

2 people found this helpful.
660

I put a new air filter in it and clean the mass airflow sensor. I actually didn't think this was going to be the problem and I'm still waiting for the check engine light come back on but everything seems good so far. I'll get back to you if the light comes back on. Thank you very much for the info!

1 people found this helpful.
224,235

Sounds good, the goal is to not keep your hands dirty!

1 people found this helpful.
20

same problem 2016 kia sportage ...moisture in engine ecu plugs under the hood.well more like corrotion couple pins rotted out....give them a look

2 people found this helpful.
660

I just got back on here and was reading these old posts. I want to tell you what the problem was with the 09 kia sportage. It was the mass airflow sensor. There is a way to test it by unplugging the wire to it. And if the engine trys to stall it is good. If the engine continues to run it's bad because the engine is in something like limp mode. Or open loop? I can't remember which but you can look this up online. After replaced it's run great since! And way better fuel mileage!

3 people found this helpful.

Your Answer:

Sportage

Looking for a Used Sportage in your area?

CarGurus has 1,764 nationwide Sportage listings starting at $5,295.

Postal Code:

CarGurus Experts

  • #1
    Guru199CH
    Reputation
    1,530
  • #2
    Anolack
    Reputation
    1,230
  • #3
    Manny Caraballo
    Reputation
    1,080
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Kia Sorento
64 Great Deals out of 2,267 listings starting at $4,995
Used Hyundai Tucson
86 Great Deals out of 2,217 listings starting at $4,895
Used Honda CR-V
80 Great Deals out of 4,314 listings starting at $1,695
Used Toyota RAV4
77 Great Deals out of 2,635 listings starting at $2,500
Used Hyundai Santa Fe
60 Great Deals out of 1,530 listings starting at $4,477
Used Nissan Rogue
143 Great Deals out of 5,122 listings starting at $2,000
Used Chevrolet Equinox
77 Great Deals out of 2,891 listings starting at $2,800
Used Volkswagen Tiguan
90 Great Deals out of 2,942 listings starting at $399
Used Toyota Highlander
25 Great Deals out of 723 listings starting at $5,500
Used Ford Escape
120 Great Deals out of 4,611 listings starting at $3,454

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. Content will be removed if CarGurus becomes aware that it violates our policies.