Car diagnostics is simply the process of electronically testing the performance of your vehicle. By analysing the data a car diagnostic can help to reveal a number of problems in your engine.
EG The transmission , Oil tank, Fuel tank, Exhaust system and other various components of the vehicle.
Modern cars have been designed to include a wide range of sensors and controls that alert the car whenever there is an issue or possible problem. We can then use the data to pin point the problem and apply the fix.