2012 toyota prius engine runs rough when car is cold, P0301 code
Like the subject says, I've only driven it once since the issue appeared, but after 3-5 minutes of driving it drove just fine. After parking and letting the car sit for an hour or so(it's warm and humid outside), the issue re-appeared briefly, then the car ran fine, this time it threw a check engine light though.
After letting the car sit in the garage for a few days I tried starting it again and just letting it idle in the garage, and the engine is running rough, didn't give it time to warm up.
I ran the codes and it came back with a P0301.
Let me know what my next step should be, is this something I could fix and/or diagnose myself? One of the videos in the common issues suggests unplugging the EGR and seeing if the issue goes away, should I try that here? to determine if it's a clogged EGR?