I own a 2015 chevy malibu. 2.5l LS. 177000km. My engine light is on. Diagnostic code was P0171. I've changed oxy sensor, changed intake rocker solenoid, cleaned MAP sensor, cleaned throttle, cleaned fuel injectors, changed gas cap. Light is still on,? Car runs excellent? Any ideas I can try to shut engine light off?
Clarification: Can you provide freeze frame data for this code? It may offer more clues.
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https://www.samarins.com/diagnose/freeze-frame.html
Is Camero a chinese knock-off of a Camaro? 😆
Haven’t you heard? 
I think you're going to need some diagnostic data to solve this.
helpful readings would be : MAF, MAP, IAT, O2/Fuel trims, Fuel pressure, TPS/APP
at idle, and with some throttle applied.
And then either a noid light or pressure transducer to troubleshoot the injectors. Or if you can figure out a way to test the injectors while removed from the engine.
The car has no symptoms. It runs really well. No stalling, idles very well.
a vehicle that is running lean will appear to run perfectly, until it starts burning out valves, catalytic converters, etc. An engine running lean is TOO HOT.
But I guess you know better. Good luck.
I just scanned with a foxwell NT301 .tool. came back code P0171. System to lean bank 1. I'm thinking dirty injectors ,I'm not get any major Symptoms. I cleared code an going to try seafoam to clean,? Any other ideas?
I gave you all the ideas I had, and you ignored all of them. Please waste somebody else's time.
Disconnect the battery to reset. Hope for the best.
Low hanging fruit question: did you replace the sensors and parts with OEM ones? Also, P0171 means you are running lean: did you rule out a vacuum leak?
No leak
How much was your fuel pressure?
No symptoms of fuel pump issues,no stalling. No idling issues. Car runs well.
What about a carbon build up?
Maybe. Open the intake and check.
Any recommended products?
Intake cleaner.
Tried intake cleaner used seafoam. Engine light still on.not sure what to do next. Any suggestions?
how did the throttle body look?
Clean no issues
@camero007, Scotty recommended an inexpensive CGSULIT scanner in one of his videos. I bought the SC301 which is actually the next higher model in their lineup. (Scotty featured the SC204.) Bear in mind that there's no way one of these things is going to take the place of a professional-grade scan tool but they have some pretty nice features for the price.
https://www.amazon.com/CGSULIT-SC301-Diagnostic-Vehicles-Emission/dp/B095WMX6B8
https://www.youtube.com/watch?v=CQsnejvDaNI
I checked oil galley. No oil on them. Don't know what's going on. Any ideas? Car runs well