Takes a while for car to Move when transmission is put into reverse

Good evening,

This sounds like the filter is clogged in the transmission.

I would have the transmission serviced and I bet that will take care of the issue.

https://www.2carpros.com/articles/how-to-service-an-automatic-transmission

Roy

Okay, the 745 indicates a pressure issue. This may mean the transmission is not good but before assuming this, I would service the transmission as I stated.

The 345 is an electrical issue with the cam sensor circuit. Check the harness closely for any damage.

Roy

P0345
Descriptor
Probable Causes
Camshaft Position (CMP) Circuit Open
Camshaft Position (CMP) Circuit Shorted to Ground
Camshaft Position (CMP) Circuit Shorted to Power
Camshaft Position (CMP) Sensor Damaged
Camshaft Position (CMP) Sensor Shielding Damaged
Powertrain Control Module (PCM) Damaged
Signal Return Circuit Open