Code Definition

B1728 — Seat Driver Rear Up Switch Circuit Short To Ground

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

About B1728

B1728 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 B1728 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.

B1728 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 up switch circuit, part of the power seat height adjustment system. DTC B1728 is set when the module detects that the rear up switch signal wire is shorted to ground, holding the input continuously low regardless of switch position. The rear up switch is a momentary contact device that pulls the input to a defined state when pressed to command the rear height motor to raise the seat cushion. When this code is set, the seat may attempt to move on its own, may not respond to the up command, or the module may disabl...

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