Code Definition

B1664 — Seat Driver Rear Up/Down Motor Stalled

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

About B1664

B1664 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.

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.

B1664 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 B1664 code is set by the Driver Seat Module (DSM) when it detects that the rear up/down motor of the driver power seat has stalled while a movement command is active. On eight way power seats the rear lift motor controls vertical adjustment of the back of the seat cushion independently of the front lift motor, allowing seat tilt adjustment. The DSM monitors motor current and run time during operation, and stores this DTC when the motor draws excessive current without producing motion or fails to reach the expected position within a calibrated time window. When this code is active, the rear...

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