Code Definition

B1515 — Seat Driver Occupied Switch Circuit Failure

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

About B1515

B1515 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 B1515 is stored, the module has detected an electrical-circuit fault in the wiring, connector, or driver associated with the named component.

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.

B1515 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 to determine whether the driver seat is occupied. This signal is used for seat belt reminder logic, interior light timing, alarm system arming, and on some vehicles the airbag suppression strategy. DTC B1515 sets when the module detects an electrical failure in the driver seat occupied switch circuit, such as an open, short to ground, short to voltage, or a signal that does not match expected behaviour over the door cycle. When this code is set, the driver may notice a permanently illumin...

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