What could it be? The main computer chip?

The car made a pop sound from the engine and a lot of white smoke blew out from the exhaust pipe, but the car just went in for service two days before. It doesn't turn over. I tried the OBD2&1 tool the first time it said MAP sensor problem, but there is no MAP sensor in my model car. I replaced the relay fuse and got another OBD2&1 tool, fully charged the battery (cause it was low). I reinstalled the fully charge battery and turn the key over to try and see if it starts but it made a ticking sound and all the needles on the speedometer was flickering. I turned the car off completely it still made the ticking sound and the needles was stilling flickering but not as bad as it is on. So I disconnected the battery, waited about an hour and reconnected the battery. I took the new OBD1&2 connected it and turn the key to AC and it read there is not dtc reading or dtc reading for this vehicle. But on the little screen it says low oil pressure (so I check the oil it was fine), check ADVTRAC (it was on so I push the button to turn it off), and tire pressure sensor fail.