Starts but dies after a second

Your first mistake was in reading the diagnostic fault codes. They never say to replace parts or that one is defective. That is especially true with a coolant temperature sensor. They have only one simple resistor inside so their failure rate is extremely low. Fault codes also never say cleaning something will solve that code. Fault codes only indicate the circuit or system that needs further diagnosis, or the unacceptable operating condition. They never say why those conditions exist.

For a sensor fault code, always start by inspecting the wiring harness and connector terminals. Voltage readings will tell if the circuit is working properly. Sometimes you need a scanner to read live data to see what the Engine Computer is seeing.

An engine that runs for one second has a working ignition system and most likely no problem with the fuel supply system. The most common cause of immediate stalling is it's in theft mode.

Look online for your vehicle if you don't have a manual to reset security /antitheft

Yup. The only cars I'm most familiar with are Chrysler products. On those you unlock a front door with the key or remote unit. If it doesn't work with the key, suspect a broken wire between the door hinges or a disconnected or defective switch in the door.

If you can't find anything online, the dealer should be able to help.