No.
Oh, sure, you can connect a scan tool or computer to the computer system. And it’ll provide codes and some basic readings from the various sensors around the car.
What A Check Engine Light Code Tells You
However, it doesn’t tell you with any degree of certainty what’s wrong with the car. It just provides enough information for a skilled and experienced technician to know where to look for the actual problem.
People who consider the information from the scan tool to be an accurate diagnosis usually end up spending a lot of money replacing parts that may or may not be necessary.
Computer System Diagnosis
The technicians at your local Cottman center are fully trained on computer system diagnosis. They know just how much of the information they collect through a scan tool that they can trust, and how much they need to verify before they make any repair recommendations.