Took my car in for 30k maintenance, basically just...

Took my car in for 30k maintenance, basically just oil change, filter change and inspection. When I picked it up check engine light was on, luckily I keep an OBD sensor in my glove compartment and was able to look up the code. Air intake temperature problem, opened up the hood and yep, it was unplugged. Cleared the code and was able to drive home. Hopefully nothing else was screwed up. :-(