Code Definition

U045D — Invalid Data Received From Automated Driving System Control Module A

System: Network Communication  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About U045D

U045D is a generic (obd-ii standard) network communication diagnostic trouble code. It belongs to the U-prefix family of codes, which covers inter-module network communication (CAN, LIN, FlexRay, or similar) faults.

Scanning & clearing: Network (U) codes report communication faults between modules. When diagnosing U-codes, checking the vehicle's CAN bus integrity, supply/ground at each module, and reading all modules for related faults is usually the first step.

Because U045D is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

Automated Driving System Control Module A processes camera, radar, and sensor inputs for driver assistance and automated driving functions and shares this data with other controllers over a high speed CAN or FlexRay network. DTC U045D is a generic network code set when a receiving module is still receiving messages from this module but the data they contain is invalid, out of range, incorrectly formatted, or in conflict with other sensor and control information. Because the bus link is working, this is a data validity or plausibility fault rather than a total loss of communication, so the caus...

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