Code Definition

B3031 — Security System Controller in Learn Mode

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

About B3031

B3031 is a manufacturer-specific 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.

B3031 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 theft deterrent module monitors the operating state of the vehicle security system to ensure normal authentication and immobiliser control. DTC B3031 is set when the module detects that the security system is in learn or programming mode outside of an active or correctly completed relearn procedure. The security controller should only sit in learn mode briefly while a key, transponder, or module is being programmed, then return to normal operation. When this code is set the immobiliser may not authenticate correctly, the vehicle may fail to start or only start ...

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