Code Definition

B2304 — Seat Headrest Feedback Potentiometer Circuit Short to Battery

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

About B2304

B2304 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.

When B2304 is stored, the module has detected a short-circuit (voltage pulled to ground or to supply) in the monitored circuit.

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 B2304 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 Seat Module or Body Control Module monitors the powered headrest position through a feedback potentiometer attached to the headrest adjustment mechanism. DTC B2304 specifically sets when the module detects that the headrest potentiometer signal voltage has risen above the normal operating range (typically above the 5V reference), indicating the signal wire has been bridged to battery voltage somewhere along its length. This narrows the diagnosis significantly because we know we are looking for a wire that has contacted a B+ source rather than ground. When this code is set, the powered head...

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