What does code U0478 mean?

Q: What does code U0478 mean?

Invalid Data Received From Restraints System Sensor H. U0478 means the module that monitors the restraints system (typically the airbag control module) received invalid or missing data from a specific sensor designated as 'H' within the restraints system. The computer detected a communication problem or a data signal that does not match expected values, so it flags the sensor's data as unreliable and sets this code.

DTC codes / U04xx · Invalid data received from a module / U0478

U0478Invalid Data Received From Restraints System Sensor H

U0478 means the module that monitors the restraints system (typically the airbag control module) received invalid or missing data from a specific sensor designated as 'H' within the restraints system. The computer detected a communication problem or a data signal that does not match expected values, so it flags the sensor's data as unreliable and sets this code.

SystemNetwork

Code typeGeneric (all makes)

SeverityHigh

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.