Knowledge Base

Root Cause – Fishbone & 5 Whys

3 min read IE validated

In plain English

When something keeps going wrong, it's tempting to fix the symptom and move on — but it comes back. 'Ask why 5 times' keeps digging until you hit the real cause. A Fishbone diagram groups possible causes (People, Method, Machine, Materials, Environment) so nothing gets missed.

The parts, simply

5 Whys
Ask 'why?' about each answer until you reach something you can actually fix.
Fishbone
Brainstorm causes across People, Method, Machine, Materials, Environment.

Why it matters to your business

Fixing symptoms is expensive and endless. Fixing the root cause once makes the problem stay gone — that's where the real savings are.

Everyday example

5 Whys on a late order

The order was late (why?) — the spray booth was backed up (why?) — changeovers take too long (why?) — no standard set-up (why?) — tools aren't kept at the booth (why?) — no 5S there. The real fix isn't 'work faster', it's a 5S + standard changeover at the booth.

How SenseFlow does this for you

When SenseFlow finds a problem it walks the 5 Whys for you and names the likely root cause, so you fix it once.

Keep reading