Problem Solving
5 Whys
5 Whys is a simple root cause technique that uses repeated why questions to move from a visible problem toward the process conditions that allowed it to occur.
Root Cause Analysis5 WhysProblem Solving
Knowledge hub
Problem Solving
Define problems clearly, investigate causes and test countermeasures using 5 Whys, fishbone, A3, 8D and practical root cause methods.
Guides in this hub.
Start with the fundamentals, then follow the related methods as the knowledge base grows.
Problem Solving
8D Problem Solving: Structure Cross-Functional Corrective Action
Understand the 8D problem-solving method, from containment and root cause analysis through corrective action, validation, prevention and team learning.
8DCorrective ActionRoot Cause AnalysisContainment
Problem Solving
A3 Problem Solving
A3 Problem Solving combines structured thinking, evidence and concise communication to guide teams from a problem toward tested countermeasures and follow-up.
A3PDCARoot Cause Analysis
Problem Solving
Fishbone Diagram: Organize Possible Causes
Learn how a fishbone diagram structures possible causes, when to use 4M or 6M categories, and how to move from brainstorming to verified causes.
Fishbone DiagramIshikawa DiagramRoot Cause Analysis4M
Problem Solving
Root Cause Analysis: Find and Remove the Cause
Learn what Root Cause Analysis is, how to distinguish symptoms from causes, when to use tools such as 5 Whys and fishbone diagrams, and how to verify results.
Root Cause AnalysisRCA5 WhysProblem Solving
Problem Solving
Toyota Problem Solving: Develop Better Thinking Through PDCA
Understand Toyota-style problem solving as a disciplined PDCA-based approach to clarify problems, break them down, identify causes and verify countermeasures.
Toyota Problem SolvingPDCAA3Root Cause Analysis