Code Definition

B101D — Secondary Information Centre Interface Module Hardware Performance (EEPROM Failure)

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

About B101D

B101D 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.

When B101D is stored, the module has detected a plausibility fault — the measured value is in the electrical range but is not consistent with expected operating behaviour.

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.

B101D 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

On Holden (GM) vehicles, the Secondary Information Centre (SIC) is a display/interface module that presents trip computer, driver information, and warning messages to the driver via the dashboard display, communicating with the Body Control Module and other modules over the GMLAN (Class 2/LS-CAN) bus. DTC B101D is a hardware performance code set when the SIC module detects an internal fault in its EEPROM — typically a read/write failure, checksum mismatch, or memory corruption — while operating voltage is within the normal 9–16V range and no external GMLAN communication faults are presen...

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