U0256 Lost communication with the trailer lighting module
- System
- Network - modules not talking to each other
This is a standard code. It means the same thing on every make of vehicle.
What OBD2 FaultFinder shows for U02xx codes
The program names the module the code points at (seat, steering column, trailer, fuel level sensor, fuel pump driver, hybrid powertrain) on the Trouble Codes screen and in Look up a code. It has no readings from those modules; what it keeps is the code list with each recording, so Compare shows Gone, New or Still there.