Code Definition

B2437 — Passengers Seat Belt Buckle Switch Circuit Short to Battery

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

About B2437

B2437 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 B2437 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 B2437 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 front passenger seat belt buckle switch to determine whether the belt is latched or unlatched, supporting the seat belt warning chime and indicator and feeding belt status into the supplemental restraint and occupant classification systems used by the passenger air bag deployment strategy. DTC B2437 is set when the module detects the passenger buckle switch signal input is pulled to battery voltage rather than swinging between its expected low and reference levels. Because the switch normally closes to ground when latched, a continuous high voltage on the s...

Join TaT to view the complete code information and diagnostic details.

Quick Facts