Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Autoscanner Works

This is a no frills device that does exactly what the box says. I was able to pull the code from the car, diagnose the problem ( in this case, replace the thermostat ) and then reset the codes. The repair cost me less than $20. I am not sure how much a automotive shop would have charged but I am willing to bet I came out cheaper. And that was the first time I used the scanner.