Code Definition

B1661 — Seat Driver Front Up Circuit Short To Battery

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

About B1661

B1661 is a manufacturer-specific body diagnostic trouble code. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B1661 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.

B1661 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

B1661 is set by the seat control module when it detects that the driver front seat cushion up motor circuit has been shorted to battery voltage. The module monitors the drive output and the load side of the motor circuit, and stores this code when it sees unexpected battery voltage on a circuit that should be either grounded by the module or floating depending on commanded state. A short to battery on a motor circuit is electrically aggressive because it can cause uncommanded motor operation, drive transistor damage in the module, or rapid heating of the motor windings. When this code is activ...

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