Conditions for Setting the DTC
WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
P16FA
During commanded state the ECM detects the variable geometry turbine DC motor is drawing an excessive amount of current for greater than 4 s.
P16FC
During commanded state the ECM detects the variable geometry turbine DC motor has reached an excessive temperature for greater than 7 s.