Code Definition

B1013 — ROM checksum error

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

About B1013

B1013 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.

B1013 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) in Holden vehicles manages a wide range of body electrical functions including interior and exterior lighting, central locking, power windows, instrument cluster communication, and security system operation. DTC B1013 is set when the BCM performs an internal self-check and detects that the checksum value calculated from its Read-Only Memory (ROM) data does not match the expected stored checksum, indicating that the software or calibration data within the module has become corrupted. This checksum validation is performed at power-up and periodically during operatio...

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