Gen 2 Cruze (2019) with P0171 Issues
Hi all,
I have a 2019 Cruze with the Gen 2 engine (120k miles). It’s been throwing P0171 codes intermittently for about a year now. Doing a bit of research including reading the automod, it seems like only the Gen 1 Cruzes are supposed to have this issue, and all the videos or instructional material I find online mostly address Gen 1 hardware issues.
I will say that the issue started maybe a year ago after an oil change where the guy apparently damaged my MAF sensor while changing my air filter and I had a really underpowered car for a day until I took it back to them and they replaced the MAF for free, but since then it still comes up occasionally or has underperformance issues. It really only comes up when I let the car idle, otherwise it rides smooth once it gets up to speed. I use premium fuel, do regular oil changes, etc but haven’t changed out stuff like the spark plugs yet but I plan to once I get more confidence that I won’t break them, hah.
Does anyone have any ideas on what causes this in a Gen 2 Cruze and/or advice on how to approach this? I do plan to try to replace the MAF sensor, but I’m not super confident this is the root cause but don’t really have the funds to pay for full diagnostics. Thanks in advance for the help.