When car warning lights show up on your dashboard, an engine diagnostics check can help you recognize the problem before any more serious damage occurs.
Most modern vehicles today contain an onboard computer known as an Engine Control Unit (ECU) which will constantly monitor the performance of the vehicle. Sensors all around the vehicle report back to the ECU if there are problems such as low fluid levels or increased engine temperature. When a problem is identified the ECU sends out an error code. The relevant dashboard warning lights will then be displayed.
There are so many of the potential error codes that can only be read by specialist vehicle diagnostic equipment. While a warning light may display on the dashboard informing you of an issue, a diagnostics check is required to understand the full extent and cause of the problem.