Hello, my name is Mark and I will try help you with this.
Here are the real steps to follow:1. With the ignition off plug it in. You should see CAN OBD2 on the LCD.2. Turn the ignition switch to the ON position. This is the position just before you crank the starter. Do not start the vehicle.3. Then press the ENTER button on the reader which starts the scan.4. Use the SCROLL button on the reader to view the results.
Just got a reading of link error
Either the unit is faulty or there is a problem with the car.
Is there someone with another scan tool you can borrow to see if it is doing the same.
If it does then the fault is on the car.