Failure Mode and Effects Analysis — identify, rank, and prioritize failure risks before they become incidents. Classic RPN scoring plus AIAG-VDA Action Priority, fully in-browser, print-ready.
| # | Item / Component ↕ |
Function ↕ |
Failure Mode ↕ |
Effect(s) of Failure | SEVERITY | Cause(s) of Failure | OCCURRENCE | Current Detection Controls | DETECTION | RPN | AP | Recommended Action(s) | Responsibility & Target Date | Actions Taken | REVISED SCORES | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
S ↕ |
O ↕ |
D ↕ |
RPN ↕ |
AP ↕ |
S | O | RPN | |||||||||||
| S | Description | Effect |
|---|---|---|
| 10 | Hazardous — no warning | Affects safe operation; failure without warning |
| 9 | Hazardous — with warning | Affects safe operation; failure with warning |
| 8 | Very High | System inoperable; major disruption |
| 7 | High | System operable but significantly reduced |
| 6 | Moderate | System operable; some performance loss |
| 5 | Low | System operable; minor performance loss |
| 4 | Very Low | Minor defect; most customers notice |
| 3 | Minor | Minor defect; some customers notice |
| 2 | Very Minor | Minor defect; discriminating customers notice |
| 1 | None | No discernible effect on operation or safety |
| O | Description | Approx. Rate |
|---|---|---|
| 10 | Very High — almost certain | >1 in 2 |
| 9 | Very High | 1 in 3 |
| 8 | High — repeated failures | 1 in 8 |
| 7 | High | 1 in 20 |
| 6 | Moderate — occasional | 1 in 80 |
| 5 | Moderate | 1 in 400 |
| 4 | Moderate — infrequent | 1 in 2,000 |
| 3 | Low — relatively few | 1 in 15,000 |
| 2 | Low | 1 in 150,000 |
| 1 | Remote — failure unlikely | <1 in 1,500,000 |
| D | Description |
|---|---|
| 10 | Absolutely impossible to detect |
| 9 | Very remote chance of detection |
| 8 | Remote — detection very unlikely |
| 7 | Very Low detection likelihood |
| 6 | Low detection likelihood |
| 5 | Moderate detection likelihood |
| 4 | Moderately High — likely detected |
| 3 | High — very likely detected |
| 2 | Very High — almost always detected |
| 1 | Almost certain detection — reliable control |