Code Definition

B1770 — Seat Driver Backward Circuit Open

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

About B1770

B1770 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 B1770 is stored, the module has detected an open (broken or disconnected) electrical path 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.

B1770 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 Driver Seat Module (DSM), or Body Control Module on simpler systems, drives the driver seat backward output, which slides the entire driver seat rearward along the seat tracks when the rearward direction is selected. DTC B1770 is set when the module detects an open circuit on this output, meaning the smart driver sees no current draw or no continuity to the slide motor when the rearward direction is commanded. The output drives one terminal of a reversible permanent magnet horizontal slide motor, so an unplugged motor connector, broken seat track harness, or motor with internal open windin...

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