Code Definition

B2436 — Passengers Seat Belt Buckle Switch Circuit Open

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

About B2436

B2436 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 B2436 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 B2436 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 to the supplemental restraint and occupant classification systems for passenger air bag deployment logic. DTC B2436 is set when the module detects an open circuit on the passenger buckle switch signal input, meaning no valid state can be read from the switch. The buckle switch is typically a single pole device that closes to ground when latched, so an open condition leaves the signal floa...

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