Code Definition

B1517 — Seat Driver Occupied Switch Circuit Short To Battery

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

About B1517

B1517 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 B1517 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.

B1517 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 voltage to determine when the seat is occupied. This signal feeds into seat belt reminder logic, alarm system arming, interior light timing, and on some vehicles into restraint suppression strategy. DTC B1517 specifically sets when the module detects battery voltage on the seat occupied switch input when it should sit at a low signal level, indicating a short to battery somewhere in the seat harness or at the switch itself. Common triggers include chafed seat harness insulation contacting...

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