Code U0100?

It sounds like the PCM went out or you have some fuses out. you can get a preprogrammed unit by searching Google or Ebay.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

If the fuses are okay, I would replace the PCM.

Here is a guide to help and the instructions for your car in the images below:

https://www.2carpros.com/articles/how-to-replace-a-vehicles-main-engine-computer-pcm-ecm-ecu

The OBD-II trouble code U0100 stands for "Lost Communication with ECM/PCM." ECM stands for "Engine Control Module," and PCM stands for "Powertrain Control Module." They both refer to the primary computer in a vehicle that controls a wide range of functions, including engine operation, transmission behavior, and other performance factors.

This code is triggered when the ECM/PCM stops communicating with other parts of the vehicle over the CAN bus network. The CAN bus (Controller Area Network) is a system that allows different parts of the vehicle to communicate with each other without needing a central computer.

A U0100 code can be caused by several factors:

A faulty ECM/PCM.
Wiring problems, such as damaged wires, loose connections, or corroded connectors in the CAN bus.
Faulty sensors or control modules causing disruptions in the CAN bus.
If you're seeing a U0100 code, it's important to have it diagnosed and resolved as soon as possible. This code could indicate a serious problem with the vehicle's computer system. It can cause the vehicle to run poorly, or it might not run at all.

Check out the images (below). Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.