What Is choose corrective action step in 8D Process? #
Once the root causes are identified and verified in step D4, the next step is D5: Choose Corrective Action. It is focuses on selecting permanent, verified actions that eliminate root causes.
At this stage, containment action (D3) is still active, but now we’re designing long-term solutions that prevent repeated failure and make sure a stable product quality.
“Containment protects the customer; corrective action protects the future.”
Therefore, the Objective of choose corrective action is to:
- Define permanent corrective actions (PCAs) that directly act on verified root causes.
- Ensure each corrective action is specific, measurable, and verifiable.
- Identify responsibility and target dates for each action.
- Check action feasibility before implementation (technical, resource, and timing checks).
- Plan evidence for verification (process data, trials, inspection results).
How to choose corrective actions (Explained) #
Let’s understand in our 8D report using same example.
From our previous step:
| Type | Verified Root Cause |
| Occurrence root Cause | Gas regulator O-ring worn out → unstable gas flow → weak weld. |
| Non-Detection root Cause | Poor lighting in inspection area → weak joints passed undetected. |
Both need targeted corrective actions, to avoid repeated customer complaint.
Brainstorm Corrective Actions
Plan a cross-functional team discussion (CFT) to list all feasible long-term actions that eliminate or prevent the verified root causes.
For Example
| Cause Type | Root Cause | Possible Corrective Actions |
| Occurrence | Gas regulator O-ring worn | 1. Replace worn regulator. 2. Include regulator inspection in PM schedule. 3. Change supplier to better O-ring material. 4. Add flowmeter with low-pressure alarm. |
| Non-Detection | Poor lighting at inspection station | 1. Replace damaged lamp immediately. 2. Implement preventive maintenance checklist for lighting. 3. Introduce Lux-level standard for QA areas. 4. Conduct operator retraining on weld-defect identification. |
Next, evaluate which actions are practical, sustainable, and measurable.
Fill the “Corrective Action” in Template
| Root Cause Type | Corrective Action Planned / Taken | Target Date | Completion Date | Responsibility |
| Occurrence | Replace faulty gas regulator; update Preventive Maintenance (PM) checklist to include regulator O-ring inspection every 3 months; add inline gas-flow indicator. | 18 Oct 2025 | 20 Oct 2025 | Maintenance Engineer – Kiran Deshmukh |
| Non-Detection | Replace non-functional inspection lamp; install two LED lights (min. 800 Lux); create PM checklist for lighting; retrain inspectors on weld visual criteria. | 18 Oct 2025 | 21 Oct 2025 | QA Engineer – Rahul Patil |
Filled D5 Section (From Template)
| Field | Example Entry |
| Root Cause (Occurrence) | Gas regulator O-ring worn → unstable gas flow. |
| Corrective Action | Replace all regulators with new design; include O-ring check in PM checklist; install flow indicator. |
| Root Cause (Non-Detection) | Poor lighting at inspection station. |
| Corrective Action | Replace inspection lamps; establish PM checklist; verify Lux level weekly; retrain inspectors. |
| Responsibility | Maintenance Engineer (Kiran D.) & QA Engineer (Rahul P.) |
| Target Date | 20 Oct 2025 |
| Completion Date | 21 Oct 2025 |
| Approved By | Quality Manager – Rajesh Kulkarni |
Evidence Collection for next step (D6) Verification
Prepare objective proof that your corrective actions were implemented as planned:
- Photographs of new regulators and lighting setup.
- Updated PM checklists (signed by maintenance).
- Training attendance sheets for QA inspectors.
- Trial weld results and inspection data.
These documents will be attached in the D6 – Implement & Validate stage.
Common Mistakes to Avoid in D5 step #
- Choosing quick fixes instead of systemic actions.
e.g., “tightened regulator” instead of replacing or adding PM system. - No data-based validation.
Implementing action without proof of effectiveness. - Ignoring cost or feasibility.
Plan must be practical and sustainable. - Skipping approval process.
Always document Champion and customer approvals. - No linkage to FMEA or Control Plan.
Preventive control must appear in updated documentation (D7).
How D5 Links to next steps
Once you choose corrective action, the next steps are to verify and validate it:
- D6 – Implement and Validate Corrective action = Selected actions must now be implemented and validated in real conditions.
- D7 – Prevent Recurrence = Proven actions get standardized into control documents.
Summary of step D5 #
- D5 focuses on permanent corrective actions, not temporary containment.
- Each action must directly eliminate a verified root cause.
- Validate feasibility, assign responsibility, and document timelines.
- Collect evidence for verification in D6.
- Always align with FMEA and Control Plan for future prevention.
“If the cause is verified, but the action is weak, the problem will occure back soon.”
