Fishbone diagrams organize potential causes into a graphical format that facilitates an organized approach to problem solving. Fishbone diagrams are very helpful when (1) multiple potential causes exist and/or (2) potential causes are being communicated from multiple individuals at the same time (see how to complete a fishbone diagram for instructions).
Here is a fishbone diagram that a motor manufacturing team put together for shorted motor coils -
Here is another example of the same fishbone diagram, with potential causes highlighted by the team for investigation -
When addressing the causes in a fishbone diagram, consider using a root cause analysis template to explore the true “root cause” and implement a lasting corrective action. Once the root cause is identified, a control plan can help sustain corrective actions over the long run.
See the templates page for the file used to create the above documents.