When car warning lights illuminate on your dashboard, an engine diagnostics check can help identify the problem before more serious damage occurs. Most modern vehicles today contain an on-board computer known as an Engine Control Unit (ECU) which continually monitors the performance of the vehicle. Sensors all around the vehicle report back to the ECU if there are problems. When an issue is identified the ECU generates an error code. The relevant dashboard warning lights will then be displayed. There are literally hundreds of potential error codes that can only be read by specialist vehicle diagnostic equipment which we have. While a warning light may display on the dashboard alerting you to an issue, a diagnostics check is required to understand the full extent and cause of the problem. It is vital to prevent possible further damage or repair to your vehicle you have your ECU read if an engine warning symbol is displayed. With every Anuual service at Wilcan we carry out an ECU code read to check the vehicles health.