5 Whys Root Cause Analysis Template and Process
Your customer feedback program is humming along, reports going out, scores flat, nothing changing. That's almost always a root-cause-analysis gap, not a data gap. Here's how to run a 5 Whys session properly, with a worked example and the gotchas that quietly undermine the technique in practice.

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Your customer feedback data collection process is going just fine. You’re collecting lots of interesting results, sending reports to your peers and generally feeling good. But there’s a nagging problem: the scores are not improving, but they are not getting worse either. Nothing is changing in the business.
Is listening to customers a waste of time?
Maybe you’ve neglected a key part of the customer feedback process: root cause analysis and action planning.
In a recent piece of research we identified that Finding and Applying Quality System Methods was one of the 6 Key Drivers of Successful Customer Feedback Programs.
A common, useful and easy to learn quality system approach to understanding how to drive change in your score is the 5 Whys Process.
What is the 5 Whys Root Cause Analysis Process
5 Whys is one of the most commonly used quality system tools. It is a simple and methodical way to identify the root cause of an issue. The real value of the process is that it forces you to find and solve the underlying cause of the issue not just the first-glance symptom.
By solving the underlying cause you ensure that the problem does not happen again. This prevents you having to solve the symptom (the problem you currently see) in the future; thus improving the business and saving you time, money and effort every day.
For a general review of using quality process in the customer feedback process see this post: Customer Feedback Management Meets Quality Systems
How to Run a 5 Whys Analysis
There are four key steps in the process.
Step 1: Agree on the Problem Statement
“The formulation of a problem is often more essential than its solution, which may be merely a matter of mathematical or experimental skill.”

- Albert Einstein and Leopold Infeld, The Evolution of Physics (1938)
Spend some time making sure that you have a good definition of the problem. Don’t skimp on this step because if you have a muddy problem definition you will have a muddy solution.
Step 2: Ask “Why Did This Happen”
Ask what happened to cause the problem. Just go one layer at a time here. Don’t try to solve the whole problem.
5 Whys works by breaking up a complex problem into simple steps - so keep it simple.
Step 3: Check Whether This Is the Root Cause
Ask yourself if the Why you just wrote down is the real and underlying root cause of the problem. If it’s not then you have another symptom and you need to go back to Step 2 and ask Why again.
If you can, back the answer with something you can check: a log, a timestamp, a support ticket, a direct quote from the customer. An answer that is just someone’s best guess is the easiest place for the chain to go wrong, because the next Why inherits that guess as fact.
Repeat Steps 2 and 3 until you have the final and underlying cause of the issue. Typically you will need to ask the Why question about 5 times to get to the root cause.
Now you know why it’s called The 5 Whys Process.
It might take fewer or more than five cycles so be prepared to keep going until you get it solved.
Step 4: Fix the Underlying Cause, and Correct the Symptom
Now you need to fix both the underlying cause you have uncovered and the symptom.
You do this not to fix the problem you started with (the symptom) but to prevent the problem from occurring again. This is the real value of the process.
You also need to correct the symptom that started the process in the first place but if you’ve run the process correctly it will be the last time you need to fix it.
5 Whys Example
Below is a simple 5 Whys example. It is simple to follow but it will give you a good idea of how the process works.

Source: 5 Whys on Wikipedia
Common 5 Whys Failure Points
That all sounds easy, and it is, but you need to be careful that you run the process effectively and there are a few side tracks that can lead you down the wrong path.
Don’t Stop Too Soon
You can be content with the answer too early, and decide you have the root cause sorted when you don’t.
This is the most common failing I see when using this approach. So keep going until you are really certain that what you have is not a symptom but a real root cause.
Stay on Target
Sometimes you can get yourself into a circular loop where your Why points back to your first problem.
For example:
Sales are down
-> Because we are not processing enough leads
-> Because we don’t have enough sales people
-> Because we laid off sales people
-> Because we had to cut costs
-> Because sales are down.
If this happens you need to be very careful and look closely at each of the symptoms. Make sure that you haven’t just picked the most obvious Why and missed the real Why.
The same analysis could instead look like this:
Sales are down
-> Because we are not processing enough leads
-> Because we have not automated the leads management process
-> Because we have not invested in a CRM
-> Root Cause: We should invest in a CRM that can automate our leads processes.
Keep Following the Scent
Sometimes you will get a point where there are two potential whys.
To go back to our example:
Sales are down -> Because we are not processing enough leads
1. -> Because we don’t have enough sales people
2. -> Because we have not automated the leads management process
Here you need to create a new branch for each of the potential Whys. Later on you need to go back and determine which is the highest priority Why. In other words which Why is causing most of the problem so that you can start solving it.
If the branching keeps multiplying well beyond two or three, that is a sign the problem has several real causes at once, not a sign you are asking the Why question wrong. Brainstorm the candidate causes first with a fishbone (Ishikawa) diagram, grouped by category, then run the 5 Whys on the one or two branches the evidence actually points to.
A fishbone diagram sorts candidate causes by category before you pick one to drill into. The American Society for Quality publishes the step-by-step procedure, including the standard category sets.
Using 5 Whys in Customer Feedback Teams
Of course you can use a tool like 5 Whys in many ways in the customer feedback process but one of the best is in your weekly meetings where you can apply it to one or two really bad pieces of feedback each week.
Here is what you do:
- Put some time on the weekly staff or group meeting agenda.
- Then at each weekly meeting simply grab some verbatim comments from your lowest scoring responses. If you’re using Net Promoter then grab zeros and ones.
- Frame the comment as a problem statement. You may have to split it into more than one problem statement if there are several ideas in the comment. Just make sure that you have one thought/idea/problem to work with at a time.
- Then have your team run the 5 Whys process on the first problem. Aim to get to the end point in 10 or 15 minutes.
- Now, and this is the most important part, assign someone to spend the time between this meeting and the next to validate the analysis that has been done and look for a solution to the root cause.
Your goal here is to make changes to resolve the problem statement quickly. Ideally in the next week or two. If you get to a root cause that can’t be solved quickly move it off to a specific project team.
This process of reviewing customer feedback and making small changes will get you moving and make the larger changes easier to make.
Employees will also feel good that they are solving the problems that customers raise and not just sweeping them under the carpet.
Weight the Whys by Account Value, Not by Who Shouts Loudest
In B2B feedback, weight problems by account value, not by how negative the comment reads.
Many times teams will default to the lowest score in the pile, but when different customers have vastly different values this can mean focusing on the less important problem.
The CEO of your second-largest account scoring you a three is a bigger problem than five frontline users at your smallest accounts scoring you a three.
Response-weighted, the one CEO three is one bad score among many. Account-weighted, it is the one you fix first, because losing that account costs more than the rest of the threes put together.
Account weighting can also change what the real root cause turns out to be.
In one IT company we worked with, training rated the lowest of everything they measured. The obvious move was to fix training. We steered them somewhere else first. Their documentation was good enough that poor training barely moved the outcome their key accounts cared about. A mid-performing, more important driver was the one actually costing them revenue.
Want Help Making This Stick?
Running 5 Whys once is easy. Running it every week, on the feedback that matters most, and actually closing the loop, is the part most teams drop.
If you want help building that habit into your feedback programme, book a meeting and we will talk it through.
Frequently Asked Questions
How Many Times Should You Ask Why in the 5 Whys Process?
- Five is the name, not the rule. Some problems reach a real root cause in three why's, others need seven or more. Stop when you reach a cause that has no underlying causes, and start over, with more attention to the detail, if you find yourself back at your first symptom.
What's the Difference Between 5 Whys and a Fishbone Diagram?
- 5 Whys drills down one chain of cause and effect to find a single root cause. A fishbone (Ishikawa) diagram brainstorms many possible causes across categories like process, people and systems at once. Use fishbone first on a problem with more than one likely cause, then run 5 Whys on the branch the evidence points to.
When Should You Not Use 5 Whys?
- You can use 5 Whys almost everywhere but it relies on the people in the meeting having a detailed knowledge of the business. If the people in the room do not have deep enough knowledge you will likely build an incorrect thread of Whys. Guessing down a chain produces a confident, wrong root cause. Also, if your problem has multiple causes you might need to use a fishbone (Ishikawa) diagram to break apart the different drivers. Then use 5 Whys to fix the most important one.



