DTC P2414: Description
WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
This diagnostic detects a loose or uninstalled sensor. When the heated oxygen sensor (HO2S) is not securely connected to the exhaust pipe, the HO2S feedback indicates normal atmosphere conditions. When the HO2S output stays out of normal range after the HO2S is active, the powertrain control module (PCM) detects the HO2S is disconnected from the exhaust pipe, and this DTC will set.