What does code U0452 mean?

Q: What does code U0452 mean?

Invalid Data Received From Restraints Control Module. U0452 is a communication fault where the module that coordinates airbag and seatbelt operation, the Restraints Control Module (RCM), sends data that other computers on the vehicle network judge as invalid or corrupted. The receiving module detects that the RCM's messages are missing expected values or fail internal consistency checks, so it stores this code and may illuminate the airbag warning light.

DTC codes / U04xx · Invalid data received from a module / U0452

U0452Invalid Data Received From Restraints Control Module

U0452 is a communication fault where the module that coordinates airbag and seatbelt operation, the Restraints Control Module (RCM), sends data that other computers on the vehicle network judge as invalid or corrupted. The receiving module detects that the RCM's messages are missing expected values or fail internal consistency checks, so it stores this code and may illuminate the airbag warning light.

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.