Was in traffic yesterday and noticed my check engine light turn on. I stopped by a local Auto Zone on the way home and had it scanned: P0505 Idle System Malfunction. They cleared it and I drove the rest of the way home, it never came back on.

This morning I do a forums search on that code and find a bunch of others that have had it with culprits ranging from lose manifold bolts, to a catch can vacuum leak. So I went out this morning and rechecked all my bolts on my manifolds. A few were indeed able to be turned with a little torque but no where near "loose".

Decided to take it for a drive and low and behold it turned on again at a light. Stopped by a local auto store and had it scanned a second time. Same code: P0505.

I'm checking to see if there has been any more findings on this code and it's possible culprits. Also I wanted to make sure it's safe to drive it before getting to the bottom of it. Thanks all in advance!