What does code U028C mean?

Q: What does code U028C mean?

Lost Communication With Active Grille Air Shutter Module D. U028C is a network communication fault indicating that the primary control module has lost the controller area network (CAN) signal from the active grille air shutter module D, which is one of several shutter assemblies used to manage airflow through the front grille. The computer detected that the module stopped reporting on the bus, so it can no longer command the shutters to open or close for cooling, aerodynamics, or cold-start protection.

DTC codes / U02xx · Lost communication with a control module / U028C

U028CLost Communication With Active Grille Air Shutter Module D

U028C is a network communication fault indicating that the primary control module has lost the controller area network (CAN) signal from the active grille air shutter module D, which is one of several shutter assemblies used to manage airflow through the front grille. The computer detected that the module stopped reporting on the bus, so it can no longer command the shutters to open or close for cooling, aerodynamics, or cold-start protection.

SystemNetwork

Code typeGeneric (all makes)

SeverityLow

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.