Code Definition

B1704 — Seat Driver Recline Forward Switch Circuit Short To Ground

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

About B1704

B1704 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 B1704 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.

B1704 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 Body Control Module (BCM) or Driver Seat Module monitors the driver seat recline forward switch input as part of the power seat adjustment system. DTC B1704 sets specifically when the module detects a short to ground on the recline forward switch input, meaning the signal wire is being held at ground potential continuously regardless of the actual switch position. Because most seat switches signal a press by pulling the input to ground, a permanent ground reading is interpreted by the module as the switch being stuck on. When this code is set, the module typically locks out the recline for...

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