u/Expert-Hippo-4789

I started up my 2009 g37 today and at first it didn't want to start. When I pressed the button, nothing happened and car turned off. I rechecked the battery connection (I leave car sitting for 2+ weeks at a time so I disconnect the battery) the next time it started up but was running very rough, idling around 1000 rpm but +/-250 rpms. That's when I took this video.

I pulled it out of the garage hoping it would clear up but it stayed the same. When I press the gas theres no acceleration. I immediately pulled over and let it idle for about 10 more mins that's when the check engine light started flashing.

I think theres a number of issues that could be happening so I am looking for advice.

I prefer to do the fixes myself however I am willing to take it to a mechanic if its serious work. Right now I left it parked on the street would it be safe to just move it about 1/2 block back to my parking garage or just leave it in case I need to get it towed?