2005 Honda Accord coupe EX-L v6: Oxygen Sensor
 

Hello Everybody,
I trust no one in the auto repair business.
The other day, I took my car in for brake work, and an oil change.
When I picked up the car, I was told there is an engine light, and that I need to replace the oxygen(O2) sensor.

There was no engine light when I took the car in.

So I'm asking you folks, how likely is it that the sensor pigtail was unplugged?
Before I crawl under the car to look for it, does anyone know where it is?

https://cimg5.ibsrv.net/gimg/www.hon...86f8685510.jpg
2005 Honda Accord coupe EX-L v6