Code Definition

B2433 — Drivers Seat Belt Buckle Switch Circuit Short to Battery

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

About B2433

B2433 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 B2433 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 B2433 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 monitors the driver's seat belt buckle switch to determine whether the belt is latched or unlatched, supporting the seat belt warning chime and indicator and on some platforms feeding the supplemental restraint and occupant classification systems. DTC B2433 is set when the module detects the buckle switch signal input is pulled to battery voltage instead of swinging between its expected low and reference levels. Because the switch normally closes to ground when latched, a continuous high voltage indicates the signal wire is shorted to a 12V source somewhere in the harne...

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