Code Definition

B1000 — ECU malfunction

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

About B1000

B1000 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.

B1000 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

DTC B1000 on Holden vehicles is a general ECU malfunction code, typically set by the Body Control Module (BCM) or another networked control module when it detects an internal fault that is not attributable to a specific input or output circuit. The module runs continuous self-tests on its internal memory (ROM/EEPROM/RAM), processor operation, power supply rails, and communication interfaces, and will set B1000 when any of these self-tests fail or a watchdog timeout occurs. Because this is an internal-fault code, the monitored 'component' is the module itself — however, the same code can be t...

Join TaT to view the complete code information and diagnostic details.

Quick Facts