Conditions for Setting the DTC
WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
P1068
The stop/start capacitor control module detects a capacitance of less than 480 F.
OR
The stop/start capacitor control module detects an equivalent serial resistance of greater than 3.9 mΩ.
OR
The stop/start capacitor control module detects the number of consecutive cycles in which one of the capacitor cells has a voltage of 0.6 V lower than the other is equal to 10