What does code U0244 mean?

Q: What does code U0244 mean?

Lost Communication With Running Board Control Module A. U0244 is a generic network communication code indicating that a primary control module has lost the CAN (Controller Area Network) data link with the Running Board Control Module A, which operates the power-deployable running boards. The module that set the code has detected a complete absence of expected periodic messages from the running board controller for a calibrated time threshold, not merely a single missed frame.

DTC codes / U02xx · Lost communication with a control module / U0244

U0244Lost Communication With Running Board Control Module A

U0244 is a generic network communication code indicating that a primary control module has lost the CAN (Controller Area Network) data link with the Running Board Control Module A, which operates the power-deployable running boards. The module that set the code has detected a complete absence of expected periodic messages from the running board controller for a calibrated time threshold, not merely a single missed frame.

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.