Code Definition

U2014 — Audio Subwoofer Unit is Not Responding

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

About U2014

U2014 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 U2014 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

This DTC is stored by the Audio Control Module when it cannot establish or maintain communication with the subwoofer amplifier or integrated subwoofer unit over the infotainment network, typically MOST or CAN depending on the system. The powered subwoofer contains its own amplifier that both drives the speaker and communicates status back to the head unit, so it needs a solid high current supply as well as a working data link. The code sets when the subwoofer fails to respond to network polling or status requests within the expected time. The occupant may notice a loss of bass, the premium aud...

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