Piston is a handy app that enables you to read the details of your car’s diagnostic system and access its freeze-frame data. With it, you can identify the specific problem and fix it. This is possible because it allows you to connect to your car’s OBD2 socket, which is the tool used by the manufacturer to access the vehicle’s internal systems.

After you install the app, you will need to connect it to your car’s OBD2 socket. You can do this either via Bluetooth or Wi-Fi. After the connection is established, you can use the app to read the details of your car’s diagnostic system and access its freeze-frame data.