Code Definition

B1698 — Mirror Driver/Passenger Switch Circuit Short To Ground

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

About B1698

B1698 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 B1698 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.

B1698 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) monitors the door mounted mirror switch circuit, which provides position adjustment commands for the driver and passenger side power mirrors. DTC B1698 is set when the BCM detects that one of the mirror switch signal inputs has shorted to ground, typically indicated by a continuous low voltage on a pin that should pull high until the technician requests a movement. The mirror switch uses a set of momentary contacts (up, down, left, right and the mirror select) that route through the door hinge boot back to the BCM, with the BCM applying a reference voltage and wat...

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