Method for locating a fault on an electrical distribution network including a plurality of nodes (1, 2, 3, 4, 5, 6, 8, 12) connected directly or indirectly to a concentrator node, each of the nodes in the plurality of nodes being equipped: - with a powerline communication module able to exchange data with said concentrator node and with one or more adjacent nodes among the plurality of nodes and via the network, and - with a memory able to store data; the concentrator node comprising: - a powerline communication module configured to communicate with said nodes, and - a fault detection module, the concentrator node being configured to transmit information to a remote processing unit common to a plurality of concentrator nodes, for example via a mobile telephony network; the method comprising: a) recording, in the memory of the nodes, one or more sets of state data, for which each state data item is associated with a node adjacent to the node to which the memory belongs, the state data being dependent on the detection or absence of detection by said node of an activity of said adjacent node, b) collecting, in the concentrator node, sets of state data stored in a plurality of nodes, each of the sets being stored in a respective node, c) by comparison and cross-referencing of the state data collected by the concentrator node, identifying, at the concentrator node, nodes for which the associated state data or the change in the associated state data indicates an absence of activity, deducing, in the concentrator node or in said remote processing unit common to a plurality of concentrator notes, a probable location of a fault on the network from the nodes identified and from a mapping of said network. - with a powerline communication module able to exchange data with said concentrator node and with one or more adjacent nodes among the plurality of nodes and via the network, and - with a memory able to store data; the concentrator node comprising: - a powerline communication module configured to communicate with said nodes, and - a fault detection module, - a powerline communication module configured to communicate with said nodes, and - a fault detection module, the concentrator node being configured to transmit information to a remote processing unit common to a plurality of concentrator nodes, for example via a mobile telephony network; the method comprising: a) recording, in the memory of the nodes, one or more sets of state data, for which each state data item is associated with a node adjacent to the node to which the memory belongs, the state data being dependent on the detection or absence of detection by said node of an activity of said adjacent node, b) collecting, in the concentrator node, sets of state data stored in a plurality of nodes, each of the sets being stored in a respective node, c) by comparison and cross-referencing of the state data collected by the concentrator node, identifying, at the concentrator node, nodes for which the associated state data or the change in the associated state data indicates an absence of activity, deducing, in the concentrator node or in said remote processing unit common to a plurality of concentrator notes, a probable location of a fault on the network from the nodes identified and from a mapping of said network. a) recording, in the memory of the nodes, one or more sets of state data, for which each state data item is associated with a node adjacent to the node to which the memory belongs, the state data being dependent on the detection or absence of detection by said node of an activity of said adjacent node, b) collecting, in the concentrator node, sets of state data stored in a plurality of nodes, each of the sets being stored in a respective node, c) by comparison and cross-referencing of the state data collected by the concentrator node, identifying, at the concentrator node, nodes for which the associated state data or the change in the associated state data indicates an absence of activity, deducing, in the concentrator node or in said remote processing unit common to a plurality of concentrator notes, a probable location of a fault on the network from the nodes identified and from a mapping of said network.