We’ve all been there—you’re driving along Perth’s busy streets and suddenly a warning light flicks on. Is it something minor, or the start of a major problem? Instead of guessing, most car owners turn to a professional auto diagnostic test . But what actually happens during this process? Let’s break it down in simple terms so you know exactly what to expect the next time your car needs one. Step 1: The Initial Scan When you bring your car to Perth Auto Mechanic , our team starts by plugging a diagnostic scanner into your vehicle’s onboard diagnostics system (OBD-II port). Think of this as your car’s “information hub.” The scanner communicates with your car’s computer and retrieves any error codes that have been stored. These codes point directly to systems that might be under stress, like the engine, transmission, brakes, or exhaust. Step 2: Reading the Error Codes The scanner displays a list of codes—sort of like a doctor reading test results. Each code corresponds to a specific...