Code Definition

B1733 — Mirror Driver Vertical Switch Circuit Failure

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

About B1733

B1733 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 B1733 is stored, the module has detected an electrical-circuit fault in the wiring, connector, or driver associated with the named component.

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.

B1733 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 Door Module monitors the driver power mirror vertical (up and down) switch circuit, which is part of the exterior power mirror adjustment system. DTC B1733 is set when the module detects an abnormal condition on the vertical switch input, such as the signal being held at an invalid voltage level, multiple inputs being active simultaneously, or the switch failing to respond as expected. The mirror vertical switch is typically a multi function rocker located on the driver's door panel that selects up or down movement when the mirror selector is set to driv...

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