A car diagnostic test is a professional inspection that uses advanced scanning tools to read your vehicle’s onboard computer system, identify fault codes, and detect hidden mechanical or electrical issues. If your dashboard warning light is on or your vehicle is not performing properly, a car diagnostic test in Trowbridge at S&M Auto Service provides fast, accurate answers so you can avoid costly breakdowns.
If you’re searching for a car diagnostic test near me in the UK, our Trowbridge garage offers trusted local expertise, modern equipment, and transparent advice you can rely on.
What Is a Car Diagnostic Test?
Modern vehicles are equipped with an onboard computer system, often referred to as the Engine Control Unit. This system monitors performance across multiple components, including fuel injection, ignition timing, emissions, braking systems and sensors.
During a car diagnostic test, our technicians connect professional diagnostic equipment to your vehicle’s OBD port. This allows us to
