Code Definition

B1656 — Seat Driver Rear Up Circuit Open

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

About B1656

B1656 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 B1656 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.

B1656 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

B1656 indicates that the seat control module has detected an open circuit condition specifically in the driver seat rear up motor circuit. This circuit drives the rear lift motor that raises the rear of the driver seat cushion, and the module sets this code when it commands the motor to operate but sees no current flow, indicating a broken connection somewhere between the module output, the motor, and the return path. The fault may be the result of a broken wire, separated connector, internally open motor windings, or a failed module output driver. When this code is set, the rear up function o...

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