A standard car diagnostic check involves connecting specialist car diagnostic tools to your vehicle’s onboard computer. This identifies fault codes for issues related to engine management, brakes, emissions, tyres, electronics, and more.
Mechanics don’t just use car diagnostic tools, though. Many car diagnostic tests include manual checks to follow-up the initial scan of your vehicle’s system. This helps with the interpretation of the vehicle’s fault codes. For these purposes, this process is more extensive than MOT testing.
What is the goal of a car diagnostic test? They can highlight problems with engine performance, transmission, exhaust systems, safety features, and even battery or alternator faults. The test provides mechanics with precise information that allows them to carry out repairs.