Code Definition

B2303 — Seat Headrest Feedback Potentiometer Circuit Open

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

About B2303

B2303 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 B2303 is stored, the module has detected an open (broken or disconnected) electrical path 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 B2303 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 B2303 specifically sets when the module detects an open circuit on the headrest potentiometer signal, with the signal voltage pegged at or near the reference voltage and no current flow through the potentiometer wiper. This typically indicates a broken wire, a disconnected connector, or a failed potentiometer with an open wiper or open resistive element. When this code is set, the powered headrest typically does not move under memory ...

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