The cars are equipped with control modules or computers, which communicate with each other via the CAN bus (Control Area Network).
The CAN bus has two lines: CAN high speed and CAN low speed. In the case of CAN high or high speed, it transmits data at 500k bits/second, and CAN low or low speed is 125k bits/second. To process and transmit messages between the two CAN buses, the Integrated Power Module (TIMP) is used. Each vehicle control module has an identification code with which the TIMP identifies the module that is communicating. This is known as binary conversation.
DTC code U0001 OBD2 indicates that a problem has occurred in the Control Area Network harness or connector or the Fully Integrated Power Module.