Code Definition

B1736 — Mirror Driver Vertical Switch Circuit Short To Ground

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

About B1736

B1736 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 B1736 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.

B1736 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 driver side mirror vertical switch input through a low current circuit that normally sits at a reference voltage and is pulled to ground only briefly when the driver operates the switch. DTC B1736 is set when the BCM detects the input continuously held at ground potential when no switch action is expected. This indicates an unintended short to ground, either through a stuck switch contact, a chafed harness conductor touching chassis, or a damaged module driver pulling the input low internally. With this code present, the BCM may interpret the constant...

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