Palio Overheating Check Engine Light

Indeed, the symptoms you describe are quite indicative of a fault within the active air flap system. The check engine light illuminating in conjunction with engine overheating strongly suggests that the air flap is not functioning as intended. May I inquire as to whether you have retrieved any fault codes using an OBD-II scanner? Knowing the specific code(s) would greatly assist in narrowing down the potential causes and confirming the diagnosis.

Yes, I have. The fault code points to a problem with the flap motor itself. Is this a common issue, and is replacement the only real solution?

The fault code indicating a malfunction in the flap motor is quite telling. While other factors could theoretically contribute, the preponderance of evidence suggests a defective electromechanism. Given the age of the vehicle and the mileage, component degradation is certainly plausible. Replacement of the faulty unit is the most prudent course of action. I would strongly advise consulting with a qualified automotive technician to ensure proper diagnosis and repair. It is also possible that a software installation is necessary after replacing the part.

Thank you for the confirmation. I took it to a shop and they confirmed the flap motor was defective. The repair cost 590€ to replace the electromechanism and fix the overheating. All good now.