The diagnostic code P0601 OBD2 basically means that there is a memory checksum error of the internal control module, and is set when the Powertrain Control Module (PCM) detects a communication failure between one or more control modules, including itself. Taking into account that in any case the PCM (Powertrain Control Module) is the main controller.
The Control Area Network (CAN) usually has control modules for systems such as turbo control, transmission control, ABS brakes, proximity control, traction control and stability. It should be noted that CAN (Control Area Network) system components vary by make and model.
The CAN system (Control Area Network) is responsible for monitoring and controlling all aspects of vehicle operation through a system that allows all the microprocessors and controllers of a vehicle to send messages and signals to each other, as well as the sensors they control.