The Ford Fiesta 'Engine Malfunction Service Now' message is more than just a warning—it's a call to action. Common causes include fuel system issues, faulty sensors, or electrical problems. Ensure your vehicle's safety and performance by addressing these issues promptly. For step-by-step instructions on diagnosing the problem, visit haynes.com. #HaynesManuals #HaynesShowsYouHow #FordFiesta | Haynes Manuals