deepthaw

Because you don't want people learning to work on cars working on your own car.

Eh, they're supervised by an instructor I trust so I'm fine with that.

Depending on the work involved, be prepared to bring it back. Perhaps several times.

And if anyone involved in the repair process thinks that pulling codes related to a check engine light can tell them everything they need to know in order to fix the problem... Run, do not walk, away.