What does code U0444 mean?

Q: What does code U0444 mean?

Invalid Data Received From Body Control Module C. U0444 is a communication fault indicating that a control module on the vehicle's network received data from the Body Control Module C (BCM-C) that it judged invalid or corrupted. The receiving module detected a message from BCM-C that did not match the expected format, contained out-of-range values, or failed its internal checksum, so it flagged the data as unreliable rather than acting on it.

DTC codes / U04xx · Invalid data received from a module / U0444

U0444Invalid Data Received From Body Control Module C

U0444 is a communication fault indicating that a control module on the vehicle's network received data from the Body Control Module C (BCM-C) that it judged invalid or corrupted. The receiving module detected a message from BCM-C that did not match the expected format, contained out-of-range values, or failed its internal checksum, so it flagged the data as unreliable rather than acting on it.

SystemNetwork

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

AreaInvalid data received from a 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.