FMEA RPN Calculator — Severity × Occurrence × Detection

Severity (S) — how serious is the effect

Occurrence (O) — how often will it happen

Detection (D) — how likely will controls catch it

RPN

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Severity

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Occurrence

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Detection

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AIAG-VDA 2019 Action Priority (AP)

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RPN range	Priority	Action required
≥ 200	CRITICAL	Mandatory action — redesign or process change. Cannot ship product.
120 – 200	HIGH	Action required — develop containment plan and timeline before next phase.
60 – 120	MEDIUM	Plan corrective action — address in next continuous improvement cycle.
< 60	LOW	Monitor only — no immediate action required.
Severity = 9 or 10	SAFETY/REG	Action mandatory regardless of RPN — design out the failure mode.

FMEA Risk Priority Number.