Code Definition

B1516 — Seat Driver Occupied Switch Circuit Open

System: Body  |  Type: Manufacturer-Specific  |  Make: Generic

About B1516

B1516 is a manufacturer-specific body diagnostic trouble code. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B1516 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.

B1516 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

The Body Control Module (BCM) or restraint control module monitors the driver seat occupied switch circuit for proper continuity, using this signal for seat belt reminder, interior light timing, alarm system arming, and on some vehicles for occupant detection inputs to the airbag system. DTC B1516 specifically sets when the module detects an open circuit on the driver seat occupied switch wiring, meaning continuity has been lost between the switch and the module. Most often this points to a broken wire at the seat slide flex point, a disconnected seat connector under the cushion, or an interna...

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