Conditions for Setting the DTC
WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
P2670
Hybrid/EV powertrain Control Module 1 has detected a short to ground on the high side driver 2 circuit during Hybrid/EV powertrain Control Module 1 initialization.
P2671
Hybrid/EV powertrain Control Module 1 has detected a short to voltage on the high side driver 2 circuit during Hybrid/EV powertrain Control Module 1 initialization.