P0174 Code different variables though

-2014 sport 4.0L with now. 220k miles.
I have been noticing my truck being slightly sluggish and then a couple days later I threw a CEL and trac off light. Checked codes today and it was a p0174 lean bank 2. I have been trying to sort through things but after clearing code it’s taking about 250 miles for it to throw the code again. If it’s a A/F sensor, would it not throw the code sooner? Other thoughts are fuel pump, pin hole in vacuum hose somewhere and I still need to clean the MAF sensor. Jus thought it curious that it took so long for it to throw the code again

 

Well my CEL and Trac Off Lights turned off this evening. Not sure how that happened. Does that help give any clarity to potential issues?

 

If I were to guess, you may have a power/ground issue.
I’d start at the ABS module with the codes you have currently.

 

I’ll take a look. I confused how the abs could cause the p0174 lean code

 

I suspect he was trying to reply to a different thread, the Trac Off light almost always comes on with an engine light.
I would want to look at long and short term fuel trims on both banks at idle and while driving, if there is a big difference between banks I would suspect an Air/Fuel ratio sensor that is lying, if they are close to the same then vacuum leaks, MAF, and fuel pressure would be things to check.

 

^^ This.

 

Started driving my truck again for work and still dealing with this issue. How would I go about looking at these Fuel trims? I have now replaced the battery, cleaned MAF, new gas cap for good measure. Comes one roughly 240 miles into driving. It did go 5-6 175mile one way trips without throwing the trac off and check engine lights and then had a longer 300mile trip and threw the lights right around the 250mi mark.

 

Scan tool

 

Well finally got to read the code and what I assumed was another p0174 is actually a p2197 so the saga continues