System and method for power line communication (PLC) signal data body encoding using differential phase detection

A method comprising:

• performing in a controller in a vehicle, the controller being in communication with at least one other controller in the vehicle via a power line:
• receiving, from first circuitry, a preamble section of a power line communication (PLC) message communicated on the power line;
• determining whether a noise level in the preamble section is greater than a threshold;
• and
• performing at least one of:
• in response to determining that the noise level in the preamble section is not greater than the threshold, receiving, from the first circuitry, a data section of the PLC message;
• and
• in response to determining that the noise level in the preamble section is greater than the threshold, instead of receiving the data section of the PLC message from the first circuitry, receiving differential phase information from second circuitry, wherein the differential phase information indicates whether two symbols in the PLC message are out-of-phase with each other.