A method and an associated system for monitoring and instantly identifying faults in a data communication cable are disclosed. A fault monitoring program learns a reference data traffic pattern communicated through the data communication cable by reading inputs from a sensor. The reference data traffic pattern is stored and is used for determining normalcy of data traffic through the data communication cable. The fault monitoring program monitors for a fault in a data traffic, and, if a fault is detected, activates a fault indicator sending out fault signals to notify users of the fault. If the fault is not recovered within a predefined recovery period, the fault monitoring program deactivates the fault indicator and shuts down a power source for later use of the data communication cable.