Code Definition

B1BA0 — Excessive Challenge Requests or Start Attempt in Storage Mode

System: Body  |  Type: Manufacturer-Specific  |  Make: Land Rover

About B1BA0

B1BA0 is a manufacturer-specific body diagnostic trouble code recorded for Land Rover 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.

B1BA0 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) on this Land Rover tracks the vehicle start authorisation process, which relies on a cryptographic challenge and response exchange between the BCM, the Keyless Vehicle Module (KVM), and the key fob transponder before the engine will be allowed to crank. When the vehicle is placed into transport mode or storage mode (a reduced function state used during shipping or long periods of inactivity to minimise battery drain) the BCM expects only a small number of authorised start sequences and logs every challenge request it processes. DTC B1BA0 is set when the number of ...

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