Code Definition

B0008 — Wrong Transponder Key / Incorrect Transponder Response (Immobiliser System)

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

About B0008

B0008 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 B0008 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

This fault code is logged by the immobiliser control unit (ICU) when the vehicle security system receives a response signal from the transponder key that does not match the expected security code programmed into the immobiliser module. It is not a general engine or powertrain fault but a body and security system Diagnostic Trouble Code specific to the immobiliser system used in Holden and Isuzu vehicles. The condition is detected when the ignition is switched to the ON position and the ICU attempts to authenticate the key, and if the transponder code returned does not match the stored values, ...

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