If the evidence collected does not support an effective change, or if the problem still exists or recurs, the team should repeat the review of the problem-solving investigation and analysis. Effectiveness checks may fail due to poor investigation, or the fact that the solutions were aimed at the symptoms rather than the root causes of the problem.
Common reasons for ineffective problem-solving are:
- Incorrectly or incompletely describing the non-conformity
- Hasty problem-solving activities
- Lack of team participation from cross-functional groups
- Poor or infrequent communication regarding the focus of the process
- No logical process
- Misidentification of the root cause
- Poorly implemented corrective/preventive action plans
- Failure to review lessons learned
