Code Definition

B1636 — Mirror Driver Right Circuit Open

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

About B1636

B1636 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 B1636 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.

B1636 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 door control module monitors the output driver circuit that controls the right side outside mirror motor. DTC B1636 is set when the module commands the mirror to move and detects an open circuit on the driver output, meaning current is not flowing through the motor windings as expected. The mirror motor uses bidirectional voltage applied through paired output drivers to position the mirror glass for vertical and horizontal adjustment, so an open circuit on either output line will prevent at least one axis of travel from working. When this code is set, the right...

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