Code Definition

B1957 — Seat Front Up/Down Potentiometer Feedback Circuit Short To Ground

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

About B1957

B1957 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 B1957 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.

B1957 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 B1957 code is set when the Driver Seat Module (DSM) or seat memory module detects a short to ground condition on the front cushion up/down potentiometer feedback circuit. This potentiometer reports the vertical position of the front of the cushion to the module by varying its wiper voltage across the supply rail, which is normally about 5 volts. When the module sees the signal voltage pinned at or near zero volts and the value does not change as the front of the cushion moves, it concludes the signal wire is shorted to ground somewhere in the circuit. With this code active, position feedba...

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