P0171 and p0174

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.

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.

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.

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?

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

Good morning jims 74, what size engine is this?

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?

What exactly is the engine doing?

And where is the exhaust bad?

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!

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

WHAT IS BANK 1 SENSOR 1 ON 2009 KIA SPORTAGE V6

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

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!