Code Definition

B2910 — Steering Column Password Incorrect

System: Body  |  Type: Generic (OBD-II Standard)  |  Make: Holden

About B2910

B2910 is a generic (obd-ii standard) body diagnostic trouble code recorded for Holden vehicles. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

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.

Because B2910 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The Body Control Module (BCM) manages the security authentication exchange between the steering column lock module and the vehicle immobiliser system. DTC B2910 is set when the BCM receives an incorrect or invalid security password message from the steering column lock module during ignition on or start authorisation. The two modules must exchange a matching rolling security code before the column will unlock and engine start is permitted, so a mismatch breaks that handshake. When this code is set the vehicle may fail to start or crank without starting, the steering column lock may not release...

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