Set Condition
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.
The Powertrain Control Module (PCM) detects that the O2 Sensor 1/2 signal voltage is below the minimum calibrated threshold. The DTC will set as Pending after one trip and Active after two trips. Three good trips to turn off the MIL.