What does code U0446 mean?

Q: What does code U0446 mean?

Invalid Data Received From Body Control Module E. U0446 means the vehicle's main computer, usually the engine control module or a gateway module, received invalid or corrupted data from Body Control Module E over the controller area network bus. The module is present and communicating, but the data frames it sends fail plausibility or checksum validation, so the receiving module flags the signal as untrustworthy.

DTC codes / U04xx · Invalid data received from a module / U0446

U0446Invalid Data Received From Body Control Module E

U0446 means the vehicle's main computer, usually the engine control module or a gateway module, received invalid or corrupted data from Body Control Module E over the controller area network bus. The module is present and communicating, but the data frames it sends fail plausibility or checksum validation, so the receiving module flags the signal as untrustworthy.

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.