O2 sensor replaced now dead battery
just had the bank one sensor 2 oxygen sensor replaced on my 2000 C5 at the local garage. Got in my car and the clock/radio was not working. Mechanic told me it had power after checking it and that it may have come unplugged from behind as replacing the O2 sensor had nothing to do with the radio. Received error code P0410 before parking the car knowing that had to be looked at next. Got the car home and three days later the battery is dead. Are these all related? What might be draining the battery as this was not previously a problem?
Thanks!











