What does code U027B mean?

Q: What does code U027B mean?

Lost Communication With Battery Charger Control Module D. U027B is a generic network communication code indicating that the primary control module has lost contact with the battery charger control module D over the vehicle's data bus. The computer has detected that expected messages from this specific module are no longer arriving within the required time window, which can be caused by a fault in the module itself, its power or ground supply, or the communication wiring.

DTC codes / U02xx · Lost communication with a control module / U027B

U027BLost Communication With Battery Charger Control Module D

U027B is a generic network communication code indicating that the primary control module has lost contact with the battery charger control module D over the vehicle's data bus. The computer has detected that expected messages from this specific module are no longer arriving within the required time window, which can be caused by a fault in the module itself, its power or ground supply, or the communication wiring.

SystemNetwork

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

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.