Erik500

Recently had a minor accident damaged the condenser. I replaced the unit including the fan assembly. The A/c would blow cold for 1 day then go into safe mode. The code showing is 9201 check refrigerant b10/6 (evaporator temp sensor) I changed the expansion valve, checked for leaks, even injected uv dye in the system. No leaks. I then changed the evaporator temp sensor but the A/c still goes into safe mode. What is wrong with A/c???