What does code U0481 mean?

DTC codes / U04xx · Invalid data received from a module / U0481

U0481Invalid Data Received From Automatic Lighting Control Module

U0481 indicates that a control module on the vehicle's network received invalid or missing data from the automatic lighting control module, which manages functions like automatic headlights, daytime running lights, and rain-sensing wipers. The receiving module detected that the data frames from the lighting module were corrupted, out of range, or absent, so it flagged the communication fault and may disable certain lighting features as a precaution.

SystemNetwork

Code typeGeneric (all makes)

SeverityLow

Fix difficultyIntermediate

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.