Are you aware of intermittent stalling problems?

What is your question?

It's happened twice in the last 5k miles, but it will just stall for no reason. It starts right up, but can't figure out why it happens. I've had the A/C on either at the time or shortly before that (which I don't use very often), but can't figure out if that would cause this to happen. the repair shop found no codes when it happened the second time. Thank you.