Code Definition

B1731 — Seat Driver Rear Down Switch Circuit Short To Battery

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

About B1731

B1731 is a manufacturer-specific body diagnostic trouble code recorded for Ford vehicles. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B1731 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.

B1731 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 memory seat module monitors the driver seat rear down switch circuit, which is part of the power seat height adjustment system. DTC B1731 is set when the module detects that the rear down switch signal wire is shorted to battery voltage, meaning the input is being held high regardless of switch position. The rear down switch is a momentary contact switch that signals the module to drive the rear height motor downward when pressed. When this code is set, the seat may attempt to lower on its own, may not respond to commands, or the module may disable the rear dow...

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