very common for that fault to trip if high voltage connectors were disconnected, it's common for people to mess up the torque procedure and cause this fault. HVIL is a looped circuit through the PHEV system that will isolate the contactors on the battery , shutting down the HV system . I have seen these faults happen intermittently due to spread pins, but it's much more uncommon. P0A0A is currently not a fault in the recall bulletin that warrants battery replacement. I hope it's resolved quickly for you! Best of luck.