2008 Toyota Prius with P0A80, P3000, P3023 & P3024 - high revving slow acceleration

2008 Toyota Prius with P0A80, P3000, P3023 & P3024. Red Triangle ⚠️, VSC & ((!)) warning lights. Hybrid battery intake fan comes on once the warning/trouble codes are triggered but, I can make them go off by clearing codes with my OBD2 scanner. Also, the engine goes into a high-rev stall (like the engine braking is engaged). When the vehicle sits over night, it operates okay for a few miles before warning lights & slow acceleration begins. Stopping & shutting off the vehicle then restarting let me regain normal acceleration until the cycle starts all over again. One shop charges me over $1k to replace the left-side axle, spark plugs & oil to try and resolve the slow acceleration issue but, it didn't work. Finally, while driving a week ago, I heard a loud shotgun bang and then saw smoke come from the backseat (intake exhaust vent) smell like an electrical wire burn.