Stopkoodi

Stopkoodi is a Finnish term used to describe a code that identifies why a system or process halted. It is used in software and hardware documentation and logs to indicate the reason for a stop. There is no universal standard for stop codes; the format and meaning vary by domain and vendor.

In computing, a stop code may appear during a system crash, halt, or controlled shutdown. For example, some operating environments use diagnostic stop codes that accompany error messages to aid troubleshooting. These codes can be numeric or alphanumeric and are often paired with textual descriptions, timestamps, and context such as the subsystem involved or the operation being performed.

In industrial and automotive contexts, stop codes or fault codes label the reason a machine, controller, or vehicle stopped. Industrial control systems and programmable logic controllers use codes to indicate safety interlocks, sensor faults, or process faults. In automotive diagnostics, diagnostic trouble codes (DTCs) help technicians determine faults that may trigger engine shutdown, reduced performance, or limp mode. The precise interpretation depends on the specific system documentation and diagnostic tools.

Because no single standard governs stop codes across all domains, users rely on vendor manuals, product specifications, and log context to translate a code into a meaningful description. Effective use often requires an understanding of the subsystem taxonomy, accompanying messages, and the sequence of events leading to the stop.

See also: bug check code, diagnostic trouble code, fault code, emergency stop.