Code Definition

U0193 (00-28) — Missing Communication With Digital Audio Control Module

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

About U0193

U0193 is a generic (obd-ii standard) network communication diagnostic trouble code recorded for Ford vehicles. 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 U0193 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

The Audio Control Module (ACM), Body Control Module (BCM), and infotainment system components communicate with the Digital Audio Control Module over the Controller Area Network (CAN) to manage audio signal routing and sound processing. DTC U0193 is set when required CAN messages from the digital audio control module are not received within a calibrated time while the ignition is in the RUN position. Subcode 00 indicates a general communication failure, while subcode 28 denotes a missing message condition, confirming that the digital audio control module is not transmitting expected network dat...

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