Methods and systems for detecting and analyzing variations in a power line communication network of a vehicle

There are provided methods and systems for detecting and analyzing variations in a power line communication network of a vehicle. The vehicle includes various vehicle modules. The power line communication network comprises power lines, which are designed such that they transmit electrical energy to the vehicle modules. Each vehicle module includes a power line communication module which is communicatively coupled to at least one of the power lines. The powerline communication modules provide the power lines, communication information and to transmit from the vehicle modules. The power line communication modules can transmit pilot signals over the powerline communication network. Comprises one or more of the power line communication modules respectively comprise a Reflektometermodul, which is configured such that it performs a reflectometric processing to the pilot signals to determine characteristics of the powerline communication network.