Code Definition

B2401 — Audio Tape Deck Mechanism Fault

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

About B2401

B2401 is a generic (obd-ii standard) body diagnostic trouble code. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

Scanning & clearing: Body (B) codes are often stored in the body control module, airbag module, or climate module. A basic OBD-II tool usually will not read body codes — an enhanced or OEM-level scan tool is typically required.

Because B2401 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 Body Control Module (BCM) or integrated Audio Control Module monitors the operation of the factory cassette tape deck mechanism via internal feedback signals from the cassette transport assembly. DTC B2401 is set when the module detects that the tape deck mechanism is not operating to factory specifications, typically due to a mechanical jam, a worn drive belt or capstan motor, or an electrical fault in the deck assembly itself. This code applies to vehicles equipped with factory cassette tape players from the late 1990s and early 2000s, and is rare on more recent vehicles. When set, the c...

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