When the check engine light illuminates on your Citroen, it signals that the vehicle's sophisticated engine management system has detected an anomaly that requires immediate attention. Modern Citroen models integrate advanced onboard diagnostics that generate precise error codes--ranging from oxygen sensor malfunctions and fuel injection irregularities to catalytic converter issues--allowing mechanics to prioritize and swiftly pinpoint the underlying problem. This real-time data is critical not only for efficient troubleshooting and targeted repairs but also for maintaining optimal engine performance, fuel efficiency, and emissions standards, ensuring the longevity and safe operation of your vehicle.
