The Talbot car's check engine light serves as an immediate, data-backed signal that one or more critical systems--such as emissions control, fuel delivery, or engine management--may require inspection. When illuminated, the onboard diagnostic (OBD) system promptly prioritizes error codes that pinpoint specific issues, ranging from a simple loose gas cap to more complex engine malfunctions. This robust diagnostic capability not only streamlines troubleshooting by providing clear, real-time data but also ensures that potential problems are addressed before they escalate, safeguarding the vehicle's performance and longevity.