Donkervoort cars, renowned for their lightweight construction and precision engineering, rely heavily on advanced onboard diagnostics to maintain peak performance. When the check engine light illuminates on one of these high-performance vehicles, it serves as a critical alert that the engine management system has detected a potential issue--ranging from sensor malfunctions to emission control discrepancies--that could impair the car's finely tuned operation. Given the data-rich communication from the OBD-II system, it's essential to promptly connect a diagnostic scanner to extract error codes, ensuring any faults with the fuel mixture, throttle response, or engine timing are accurately identified and addressed. This proactive approach not only preserves the integrity of the Donkervoort's bespoke engineering but also safeguards the driving experience and longevity of this dynamic sports car.