[squat]

I assume they just hooked up a scantron or something similar to the OBDII port to determine the issue. I hate shops that charge $$ for this. You can buy your own scanner for a few hundred $$, and autozone lets you use one for free.

I would go get your own scanner to get the code and then ask around at diff shops. Dealers are notoriously expensive when it comes to repairs. I never take my vehicles to dealers after they're out of warranty.