Hi! I’ve been trying to find fixes and this is where it’s left me. My 2015 sonic hatchback is having these codes pop up P0171 P0442 P0496. Last week I replaced the purge valve but I’m getting this horrible humming noise when I’m driving that is only heard inside the cabin. I have no problems with putting gas in my car, leaks under my car, or starting. I used to have a problem while idleing where my car would shoot forwards but that since has stopped.
Any suggestions or fixes?
Any suggestions or fixes?