When Monitored
WARNING: This page is about a different car, the 2014 Fiat 500c and 2014 Fiat 500. However, it is still accessible from the selected car via links, so may be relevant.
With the minimum engine run time of 30 seconds, Engine Coolant Temperature (ECT) at least 60°C (140°F), engine RPM between 1400 and 2900, vehicle speed between 48.3 kph (30 mph) and 115 kph (71.5 mph), and O2 Sensor in closed loop operation.