3.3TT CEL P0174 - What should I check or just take it to the dealer

[MrSmoofy]

This morning (about 50 out) I left for work and shortly after leaving the CEL came on.

JB4 says 0174

Kia Stinger P0174: Fuel System – Lean (Bank 1) Diagnosis | Drivetrain Resource

Lean fuel issue. Looking for suggestions on what I should check or just take the JB4 out and take it to the dealer since it would be under warranty.

 

[cncBilly]

This morning (about 50 out) I left for work and shortly after leaving the CEL came on.

JB4 says 0174

Kia Stinger P0174: Fuel System – Lean (Bank 1) Diagnosis | Drivetrain Resource

Lean fuel issue. Looking for suggestions on what I should check or just take the JB4 out and take it to the dealer since it would be under warranty.

So are you experiencing any symptoms? And do you have an OCC installed?

 

[MrSmoofy]

So are you experiencing any symptoms? And do you have an OCC installed?

The only system is that it's gone into limp mode because of the CEL. No I have not installed my OCC yet (lack of knowledge and someone to do it for me)

I did get gas yesterday 93 octane. That's all that's changed. JB4 & plugs, injen intake, ARK 2nd downpipe have been installed for months without issues.

 

[cncBilly]

The only system is that it's gone into limp mode because of the CEL. No I have not installed my OCC yet (lack of knowledge and someone to do it for me)

I did get gas yesterday 93 octane. That's all that's changed. JB4 & plugs, injen intake, ARK 2nd downpipe have been installed for months without issues.

I was reading the link you attched and thought maybe a vacuum leak from an OCC but thats a no. So I guess you'll have to uninstall JB4 and take it to the dealer. Unless of course some of our brainyacks here chime in with a solution. Not a lot of help from me sorry.

 

[MrSmoofy]

Terry from BMS recommended burning off the gas I got and try a fresh tank of 93. That finally happened Sunday morning. It was down to 23miles left and filled up with 93. So far no more CEL seems to be a gas issue.

 

[PMR818]

Dang just got the check engine light for the first time ever and got the same code (P0174). A few days before, I did add 5.5 gallons of E85 for the first time in a few weeks. Never had issue with it though. Been running only Map 2 as well. One difference lately is that I’ve been driving the car in sport mode way more than ever whereas before I was strictly using smart mode. Haven’t been flooring it or going nuts tho. Just like how sport mode doesn’t shift gears so readily. Weather has also been the coldest it’s been in LA for probably over a year so the intake and turbos are loving it — not sure if that attributes. Ever since the yellow engine light the car has been in limp mode no matter how many times I restart it. Got a 3/4 tank still so I guess I’ll run through the gas and just fill it up with regular 91 pump and see what happens? @Terry@BMS

Also the car originally went into limp mode with the engine light on without me hearing or noticing anything wrong with the drive (ie no overboost or crazy driving). It was when I gave it more gas that I realized the boost was gone.