Code Definition

B100B — Column Lock Ground Authorisation Circuit

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

About B100B

B100B 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 B100B 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.

B100B 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 Electric Steering Column Lock (ESCL) on Ford vehicles is an electromechanical unit that physically locks the steering column when the vehicle is shut down and unlocks it when the driver attempts to start the vehicle. The lock/unlock commands are authorised by the Body Control Module (BCM) or Remote Function Actuator (RFA) through a dedicated ground-authorisation circuit, which provides a switched ground path to the ESCL motor. DTC B100B is set when the ESCL module commands a lock or unlock event but does not detect the expected ground-authorisation signal within the calibrated timeout, whi...

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