What does code U027C mean?

Q: What does code U027C mean?

Lost Communication With Off-Board Charger Control Module. U027C is a generic network communication code indicating that the vehicle's control modules have lost contact with the off-board charger control module, which manages charging when the vehicle is connected to external power. The computer detected that expected messages from this module are missing from the communication bus, typically because the module is unpowered, disconnected, or the data line is faulty.

DTC codes / U02xx · Lost communication with a control module / U027C

U027CLost Communication With Off-Board Charger Control Module

U027C is a generic network communication code indicating that the vehicle's control modules have lost contact with the off-board charger control module, which manages charging when the vehicle is connected to external power. The computer detected that expected messages from this module are missing from the communication bus, typically because the module is unpowered, disconnected, or the data line is faulty.

SystemNetwork

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaLost communication with a control module

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.