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.
This is a rationality test based on MAP Sensor and O2 Sensor feedback that works as follows: If the Intake Manifold closed loop pressure control error (MAP model minus MAP measured) indicates too little vacuum is being generated while the O2 Sensor feedback is rich, the fault will set. This is a one trip MIL.