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8D: Tools and Techniques

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Author: Daniel Croft

Daniel Croft is an experienced continuous improvement manager with a Lean Six Sigma Black Belt and a Bachelor's degree in Business Management. With more than ten years of experience applying his skills across various industries, Daniel specializes in optimizing processes and improving efficiency. His approach combines practical experience with a deep understanding of business fundamentals to drive meaningful change.

Are you grappling with recurring problems in your organization and searching for a structured way to resolve them once and for all? Look no further than the 8D Problem-Solving Methodology —a comprehensive eight-step approach initially developed in the automotive industry but widely applicable across various sectors.

This systematic method not only aids in diagnosing the root cause of a problem but also offers a roadmap for effective solutions. However, maximizing the potential of the 8D process involves more than just following its steps. It requires the strategic application of specific tools and techniques at each stage. In this educational blog post, we will guide you through the tools and techniques best suited for each of the 8 Disciplines, empowering you to turn challenges into opportunities for improvement. So, let’s delve into this toolkit and make your problem-solving journey as efficient and effective as possible.

D1: Form a Team

The first step in the 8D Problem-Solving Methodology is to form a cross-functional team. A well-assembled team is the backbone of any successful problem-solving initiative. While it may be tempting to rush through this step, investing time and effort here can pay dividends later. Let’s explore some of the key tools that can assist you in forming an effective team.

Suggested Tools:

1. raci matrix.

The RACI Matrix is an invaluable tool for defining roles and responsibilities within the team. The acronym stands for Responsible, Accountable, Consulted, and Informed. By using this matrix, you can clearly specify:

  • Responsible : Who is doing the task?
  • Accountable : Who is ensuring the task gets completed?
  • Consulted : Who needs to provide input?
  • Informed : Who needs to know the outcome?

Clear delineation of roles prevents overlap, ensures accountability, and minimizes confusion later in the process.

RACI Matrix Template

2. Skills Matrix

Selecting team members with the right set of skills is crucial. A Skills Matrix can help you in this aspect by providing a visual representation of each potential team member’s skills and competencies. You can rate skills on a scale (e.g., 1 to 5) and identify gaps that need to be filled. The matrix can include both technical and soft skills like communication, leadership, and domain expertise.

Key Takeaway:

An effective problem-solving team is not just a group of people; it’s a carefully chosen set of individuals with complementary skills and clearly defined roles. Utilizing tools like the RACI Matrix and Skills Matrix can immensely help in this phase, setting the stage for a successful problem-solving endeavor.

By taking the time to carefully form your team and define everyone’s roles and responsibilities, you lay a strong foundation for the rest of the 8D process. Remember, a well-prepared team is more likely to find sustainable solutions and less likely to encounter roadblocks down the line.

D2: Define the Problem

After assembling a competent team, the next critical step in the 8D Problem-Solving Methodology is defining the problem. A well-defined problem serves as a clear roadmap, guiding your team in the right direction from the start. Ambiguity at this stage can lead to misdirection and wasted resources. So what tools can help you clearly and concisely articulate the problem?

1. 5W2H Method

The 5W2H method is a powerful tool for problem definition. It involves asking a series of questions to gain a comprehensive understanding of the issue at hand. These questions include:

  • Who is involved or affected?
  • What exactly is the problem?
  • When did it occur?
  • Where did it occur?
  • Why is it a problem?
  • How did it happen?
  • How much is it affecting?

By systematically answering these questions, you define the problem in a manner that is both comprehensive and easily understandable for everyone involved.

Problem Definition - is / is not template

2. SMART Criteria

The SMART criteria focus on setting specific, measurable, achievable, relevant, and time-bound goals for the problem-solving effort. This approach helps ensure that the problem is clearly defined and that the team has a focused, achievable objective to aim for.

  • Specific : Clearly define what needs to be achieved.
  • Measurable : Set criteria for measuring progress and success.
  • Achievable : Ensure the goals are realistic given the resources.
  • Relevant : Align the goals with broader organizational objectives.
  • Time-bound : Establish a timeline for solving the problem.

An image of SMART targets

Defining the problem is not a mere formality; it is a necessity for effective problem-solving. A well-defined problem ensures that everyone is on the same page and focused on the right issues. Tools like the 5W2H method and SMART criteria offer invaluable frameworks for achieving this clarity. They help dissect the problem into manageable parts, setting the stage for focused root cause analysis.

D3: Contain the Problem

Once you have a team in place and a well-defined problem, the next step in the 8D Problem-Solving Methodology is containment. This stage is often overlooked but is crucial for limiting the damage and preventing the problem from exacerbating. Containment actions are essentially short-term solutions aimed at halting the spread of the issue while you work on finding a permanent fix. Let’s delve into some tools that can guide you in this phase.

1. Check Sheet

A Check Sheet is a simple yet effective tool for collecting and organizing data. It’s often a paper-and-pencil tool that allows for quick data collection in real-time. For example, if the problem is a high rate of defects in a manufacturing line, a Check Sheet could be used to tally the number of defects by type or time of occurrence. This provides valuable insights into the scope and pattern of the problem, aiding in containment.

2. SWIFT Checklist

The SWIFT (Short Window Immediate Fix Technique) Checklist is a tool designed for rapid assessment. It outlines immediate actions that should be taken to contain the issue. The checklist could include questions like:

  • Are there safety issues that need immediate attention?
  • Can the affected products be quarantined?
  • Do stakeholders need to be informed?

By quickly going through the SWIFT Checklist, you can prioritize the most critical containment actions and implement them without delay.

Containment is not just about putting a temporary fix; it’s about preventing the problem from causing further harm or affecting other processes. Tools like the Check Sheet and SWIFT Checklist can be instrumental in quickly assessing the situation and implementing immediate containment actions.

Utilizing these tools allows you to create a rapid response mechanism, thereby minimizing the impact and scope of the problem. As you transition to finding a long-term solution, these containment measures ensure that the situation remains under control.

D4: Root Cause Analysis

Reaching the root cause analysis stage in the 8D Problem-Solving Methodology signifies a pivotal moment. Here, you transition from understanding and containing the problem to actually solving it. Identifying the root cause(s) is fundamental to ensuring that the issue doesn’t recur. While containment measures provide short-term relief, it’s the root cause analysis that offers a long-term solution. Let’s examine some essential tools that can assist in uncovering the underlying issues.

The “ 5 Whys ” is a powerful questioning technique that helps you drill down into the root cause of a problem by asking “Why?” repeatedly. Often, the apparent issue is just a symptom of a deeper problem. The 5 Whys technique encourages you to move beyond the symptoms and discover the underlying cause.

For instance, if the issue is frequent machine breakdowns, asking “Why?” might reveal:

  • Why is the machine breaking down? Because of excessive wear and tear.
  • Why is there excessive wear and tear? Because maintenance isn’t performed regularly.
  • Why isn’t maintenance regular? Because there’s no schedule.
  • Why is there no schedule? Because it was never made a priority.
  • Why was it never a priority? Because of a lack of awareness about its importance.

5 Why Root Cause Analysis Template

2. Pareto Analysis

Pareto Analysis is based on the Pareto Principle, which states that 80% of problems are often due to 20% of causes. By identifying and focusing on these significant causes, you can resolve the majority of issues with minimum effort. Pareto Analysis typically involves collecting data and creating a Pareto Chart to visualize which factors are most impactful.

Pareto-Chart-of-COPQ

3. Fishbone Diagram (Ishikawa)

Though also used in problem definition, the Fishbone Diagram is invaluable for root cause analysis as well. It allows you to categorize potential causes and delve deeper into each, often in combination with other tools like the 5 Whys or Pareto Analysis.

8d problem solving lean

Identifying the root cause is not merely a step in the process; it’s the cornerstone for effective corrective action. Tools like the 5 Whys, Pareto Analysis, and Fishbone Diagram provide a structured approach to dig deep into the problem and unearth its roots. Only by understanding the root cause can you implement solutions that are not just quick fixes but long-lasting remedies.

D5: Choose and Verify Corrective Actions

After identifying the root cause of the problem, the next logical step in the 8D Problem-Solving Methodology is to choose and verify corrective actions. It’s crucial to remember that not all solutions are created equal. Some may offer a quick fix but not a long-lasting one, while others could inadvertently introduce new issues. Therefore, this stage involves a delicate balance of selecting an effective solution and ensuring it doesn’t have unintended consequences. Let’s explore some of the tools that can guide you in making informed decisions.

1. FMEA (Failure Mode and Effects Analysis)

FMEA is a structured approach for evaluating the potential failure modes of a proposed solution and their impact. By predicting how things could go wrong, you can proactively address these issues before they occur. The FMEA process involves the identification of failure modes, assessment of their effects, and prioritization based on their severity, occurrence, and detectability. This prioritization helps you focus your resources where they’ll be most effective.

FMEA Example

2. Pilot Testing

Before implementing a corrective action on a full scale, it’s prudent to test it on a smaller scale to verify its effectiveness. Pilot testing allows you to:

  • Evaluate the impact of the solution without large-scale commitment.
  • Identify any adjustments or optimizations needed.
  • Collect data to validate the solution’s efficacy.

Pilot tests should be carefully designed to mimic the conditions under which the full-scale implementation will occur. This way, the results are indicative of what you can expect in the broader application.

Choosing a corrective action is a significant milestone, but verifying its effectiveness is equally crucial. Tools like FMEA and Pilot Testing enable you to rigorously evaluate your chosen solutions, mitigating risks and ensuring that the corrective actions will address the root cause without creating new problems.

By diligently applying these tools, you not only select the right corrective action but also build a robust verification mechanism. This two-pronged approach ensures that your solution is not just theoretically sound but practically effective as well.

D6: Implement Corrective Actions

Reaching the implementation phase of the 8D Problem-Solving Methodology is a big step. You’ve formed a team, defined the problem, contained it, identified its root cause, and chosen and verified corrective actions. Now, it’s time to put those actions into play. However, effective implementation is easier said than done. It requires meticulous planning, execution, and monitoring to ensure the corrective actions yield the desired results. Let’s look at some of the tools that can help you master this crucial stage.

1. Gantt Chart

A Gantt Chart is an excellent tool for project planning and tracking. It provides a visual timeline for the tasks involved in implementing the corrective actions. The chart specifies:

  • Start and end dates
  • Responsible parties
  • Dependencies between tasks

This visual representation makes it easier to manage resources and timelines, ensuring that implementation stays on track.

LLS Project Gantt Chart Excel Template

2. PDCA (Plan-Do-Check-Act)

The PDCA cycle is a four-step approach for implementing changes in a controlled manner. Each step serves a specific purpose:

  • Plan : Establish the objectives, processes, and metrics for the corrective action.
  • Do : Execute the plan on a small scale initially.
  • Check : Measure the outcomes against the planned objectives and analyze the results.
  • Act : Make adjustments based on the analysis and either scale the implementation or revisit the plan.

By cycling through these steps, you can continually refine your implementation approach, ensuring it aligns with your objectives.

The PDCA - Plan, Do, Check, Act Cycle

Implementation is the stage where your problem-solving efforts come to fruition, but it’s not a one-and-done deal. Effective implementation requires continuous monitoring and adjustment. Tools like the Gantt Chart and PDCA cycle provide you with the means to implement corrective actions in a structured, controlled, and measurable way.

Remember, a well-planned implementation not only solves the current problem but also equips your organization with the knowledge and experience to tackle future challenges more effectively.

D7: Prevent Recurrence

Successfully implementing corrective actions is an accomplishment, but the 8D Problem-Solving journey doesn’t end there. The next crucial step is to ensure that the problem doesn’t recur. This phase focuses on institutionalizing the improvements you’ve made, ensuring they are sustainable over the long term. It involves both documentation of new best practices and ongoing monitoring. Let’s explore the tools that can help solidify these new standards.

1. Standard Work

Standard Work refers to the documentation of the new best practices that led to the resolution of the problem. These could be new procedures, guidelines, or checklists that need to be followed. Standard Work serves multiple purposes:

  • It provides a clear and easy-to-follow guide for team members.
  • It ensures that the successful corrective actions are repeated, thereby making the improvements sustainable.
  • It serves as a training resource for new employees or for refresher training for existing staff.

Standard Work Instructions (SWI) Example Excel Template - Free to download

2. Control Charts

Control Charts are used to monitor process performance over time. These charts can help you:

  • Identify any variations in the process.
  • Distinguish between normal variations and those that need attention.
  • Trigger corrective actions if the process goes out of the defined control limits.

Regularly updating and reviewing the Control Charts ensures that you catch any deviations before they turn into bigger problems.

Statistical Process Control SPC Control Chart

Prevention is indeed better than cure. The most effective problem-solving initiatives are those that not only solve the immediate issue but also prevent its recurrence. Tools like Standard Work and Control Charts offer a structured way to document and monitor the improvements, making them a part of your organizational culture.

By diligently using these tools, you not only secure the gains made but also create a proactive environment where potential issues are identified and addressed before they escalate.

D8: Congratulate the Team

The final step in the 8D Problem-Solving Methodology is often the most overlooked but is crucial for long-term success: congratulating the team. After navigating through a complex problem-solving journey, taking a moment to acknowledge and celebrate the hard work is vital. It not only boosts morale but also encourages a culture of continuous improvement. Let’s delve into some tools and practices that can help you effectively close out your problem-solving initiative.

1. Recognition and Rewards

Acknowledging the hard work and dedication of the team is essential for maintaining a motivated and engaged workforce. Recognition can take various forms:

  • Public acknowledgment in team meetings or company-wide announcements.
  • Certificates or plaques to commemorate the achievement.
  • Small rewards or bonuses, where appropriate.

This recognition serves as a reminder that efforts are appreciated, which in turn fosters a positive work environment.

2. Lessons Learned Document

Closing out a problem-solving initiative offers a prime opportunity to capture what worked and what didn’t. A Lessons Learned Document serves this purpose:

  • It details the challenges faced, how they were overcome, and any roadblocks encountered.
  • It captures best practices for future reference.
  • It identifies areas for improvement, offering a starting point for future problem-solving endeavors.

Sharing this document organization-wide can serve as a valuable resource for other teams facing similar challenges.

Lessons-Learnt-Template

A job well done indeed deserves recognition, but it also lays the groundwork for future improvements. Tools like Recognition and Rewards and the Lessons Learned Document not only celebrate success but also institutionalize the knowledge gained. This twofold approach not only marks the successful completion of one problem-solving initiative but sets the stage for ongoing improvements and future successes.

By taking the time to celebrate and reflect, you not only acknowledge the efforts made but also capture valuable insights that can guide your organization’s continuous improvement journey.

Successfully navigating the 8D Problem-Solving Methodology is a commendable achievement, but the journey doesn’t end with implementing a solution. Each step, from forming a team to congratulating them, is a building block in your organization’s culture of continuous improvement.

Employing specific tools like RACI Matrix, 5 Whys, FMEA, and Control Charts at different stages ensures that your problem-solving efforts are not just effective but also sustainable. These tools offer more than just a way to tackle issues; they provide a structured approach to learning from them. Remember, the goal isn’t just to solve a single problem but to refine a system that becomes increasingly resilient and efficient over time. So, take a moment to celebrate your achievements, and then gear up for your next challenge, armed with the knowledge and tools that will make your problem-solving journey even more impactful.

  • Sharma, M., Sharma, S. and Sahni, S., 2020. Structured Problem Solving: combined approach using 8D and Six Sigma case study.   Engineering Management in Production and Services ,  12 (1), pp.57-69.
  • Broday, E.E. and Júnior, P.P.A., 2013. Application of a quality management tool (8D) for solving industrial problems.   Independent Journal of Management & Production ,  4 (2), pp.377-390.
  • Engineer, A.T.D., 2016. Managing project using 8D technique.   Management ,  7 (6), p.67œ76.

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Daniel Croft

Daniel Croft is a seasoned continuous improvement manager with a Black Belt in Lean Six Sigma. With over 10 years of real-world application experience across diverse sectors, Daniel has a passion for optimizing processes and fostering a culture of efficiency. He's not just a practitioner but also an avid learner, constantly seeking to expand his knowledge. Outside of his professional life, Daniel has a keen Investing, statistics and knowledge-sharing, which led him to create the website www.learnleansigma.com, a platform dedicated to Lean Six Sigma and process improvement insights.

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What is 8D? A template for efficient problem-solving

How you respond when problems arise is one of the most defining qualities of a manager. Luckily, there are tools you can use to master problem-solving. The 8D method of problem-solving combines teamwork and basic statistics to help you reach a logical solution and prevent new issues from arising.

You’ve spent months overseeing the development of your company's newest project. From initiation, planning, and execution, you’re confident this may be your best work yet.

Until the feedback starts rolling in.

There’s no sugar-coating it—things don’t always go as planned. But production or process issues are hardly a signal to throw in the towel. Instead, focus on honing your problem-solving skills to find a solution that keeps it from happening again. 

The 8D method of problem solving emphasizes the importance of teamwork to not only solve your process woes but prevent new ones from occurring. In this guide, we’ll break down what 8D is, how to use this methodology, and the benefits it can give to you and your team. Plus, get an 8D template to make solving your issue easier. 

What is 8D?

The eight disciplines (8D) method is a problem-solving approach that identifies, corrects, and eliminates recurring problems. By determining the root causes of a problem, managers can use this method to establish a permanent corrective action and prevent recurring issues. 

How do you use the 8D method?

The 8D method is a proven strategy for avoiding long-term damage from recurring problems. If you’re noticing issues in your workflow or processes, then it’s a good time to give this problem-solving method a try. 

To complete an 8D analysis, follow “the eight disciplines” to construct a statistical analysis of the problem and determine the best solution.

The eight disciplines of problem-solving

8D stands for the eight disciplines you will use to establish an 8D report. As you may notice, this outline starts with zero, which makes nine total disciplines. The “zero stage” was developed later as an initial planning stage. 

To illustrate these steps, imagine your organization experienced a decline in team innovation and productivity this past year. Your stakeholders have noticed and want to see changes implemented within the next six months. Below, we’ll use the 8D process to uncover a morale-boosting solution.

[inline illustration] D8 problem solving approach (infographic)

D0: Prepare and plan

Before starting the problem-solving process, evaluate the problem you want to solve. Understanding the background of the problem will help you identify the root cause in later steps. 

Collect information about how the problem has affected a process or product and what the most severe consequences may be. Planning can include:

Gathering data

Determining the prerequisites for solving the problem

Collecting feedback from others involved

[inline illustration] D0 Planning (example)

If we look back at our example, you may want to figure out whether this decline in morale is organization-wide or only applies to a few departments. Consider interviewing a few employees from different departments and levels of management to gain some perspective. Next, determine what knowledge and skills you will need to solve this lapse in productivity. 

D1: Form your team

Create a cross-functional team made up of people who have knowledge of the various products and workflows involved. These team members should have the skills needed to solve the problem and put corrective actions in place. 

Steps in this discipline may include:

Appointing a team leader

Developing and implementing team guidelines

Determining team goals and priorities

Assigning individual roles

Arranging team-building activities

[inline illustration] D1 Team members (example)

From our example, a solid team would consist of people with first-hand experience with the issues—like representatives from all departments and key people close to workshop-level work. You may also want to pull someone in from your HR department to help design and implement a solution. Most importantly, make sure the people you choose want to be involved and contribute to the solution.

D2: Identify the problem

You may have a good understanding of your problem by now, but this phase aims to break it down into clear and quantifiable terms by identifying the five W’s a and two H’s (5W2H):

Who first reported the problem?

What is the problem about?

When did it occur and how often?

Where did it occur (relating to the sector, supplier, machine, or production line involved)?

Why is solving the problem important?

How was the problem first detected?

How many parts/units/customers are affected?

[inline illustration] D2 Problem statement & description (example)

Use your team’s insights to answer these questions. From our example, your team may conclude that: 

Employees feel overwhelmed with their current workload. 

There is no real structure or opportunity to share new ideas.

Managers have had no training for meetings or innovation settings.

Disgruntled employees know they can achieve more—and want to achieve more—even if they seem disengaged.

Once you answer these questions, record an official problem statement to describe the issue. If possible, include photos, videos, and diagrams to ensure all parties have a clear understanding of the problem. It may also help to create a flowchart of the process that includes various steps related to the problem description.

D3: Develop an interim containment plan

Much like we can expect speedy first aid after an accident, your team should take immediate actions to ensure you contain the problem—especially if the problem is related to customer safety. 

An interim containment plan will provide a temporary solution to isolate the problem from customers and clients while your team works to develop a permanent corrective action. This band-aid will help keep your customers informed and safe—and your reputation intact.

[inline illustration] D3 Interim containment action (example)

Because your findings revealed workers were overworked and managers lacked training, your team suggests scheduling a few mandatory training sessions for leaders of each department covering time and stress management and combating burnout . You may also want to have a presentation outlining the topics of this training to get key managers and stakeholders interested and primed for positive upcoming changes. 

D4: Verify root causes and escape points

Refer back to your findings and consult with your team about how the problem may have occurred. The root cause analysis involves mapping each potential root cause against the problem statement and its related test data. Make sure to test all potential causes—fuzzy brainstorming and sloppy analyses may cause you to overlook vital information. 

[inline illustration] D4 Root cause & escape points (example)

In our example, focus on the “why” portion of the 5W2H. You and your team identify six root causes:

Managers have never had any training

There is a lack of trust and psychological safety

Employees don’t understand the objectives and goals

Communication is poor

Time management is poor

Employees lack confidence

In addition to identifying the root causes, try to pinpoint where you first detected the problem in the process, and why it went unnoticed. This is called the escape point, and there may be more than one. 

D5: Choose permanent corrective actions

Work with your team to determine the most likely solution to remove the root cause of the problem and address the issues with the escape points. Quantitatively confirm that the selected permanent corrective action(s) (PCA) will resolve the problem for the customer. 

Steps to choosing a PCA may include:

Determining if you require further expertise

Ensuring the 5W2Hs are defined correctly

Carrying out a decision analysis and risk assessment

Considering alternative measures

Collecting evidence to prove the PCA will be effective

[inline illustration] D5 Permanent corrective action (example)

Your team decides to roll out the training used in the interim plan to all employees, with monthly company-wide workshops on improving well-being. You also plan to implement meetings, innovation sessions, and team-coaching training for managers. Lastly, you suggest adopting software to improve communication and collaboration. 

D6: Implement your corrective actions

Once all parties have agreed on a solution, the next step is to create an action plan to remove the root causes and escape points. Once the solution is in effect, you can remove your interim containment actions.

After seeing success with the training in the interim phase, your stakeholders approve all of your team’s proposed PCAs. Your representative from HR also plans to implement periodic employee wellness checks to track employee morale .

[inline illustration] D6 PCA implementation plan (example)

To ensure your corrective action was a success, monitor the results, customer, or employee feedback over a long period of time and take note of any negative effects. Setting up “controls” like employee wellness checks will help you validate whether your solution is working or more needs to be done. 

D7: Take preventive measures

One of the main benefits of using the 8D method is the improved ability to identify necessary systematic changes to prevent future issues from occurring. Look for ways to improve your management systems, operating methods, and procedures to not only eliminate your current problem, but stop similar problems from developing later on.

[inline illustration] D7 Preventive measure (example)

Based on our example, the training your team suggested is now adopted in the new manager onboarding curriculum. Every manager now has a “meeting system” that all meetings must be guided by, and workloads and projects are managed as a team within your new collaboration software . Innovation is improving, and morale is at an all-time high!

D8: Celebrate with your team

The 8D method of problem-solving is impossible to accomplish without dedicated team members and first-class collaboration. Once notes, lessons, research, and test data are documented and saved, congratulate your teammates on a job well done! Make an effort to recognize each individual for their contribution to uncovering a successful solution.

[inline illustration] 8D Team congratulations & reward (example)

8D report template and example

Check out our 8D report template below to help you record your findings as you navigate through the eight disciplines of problem solving. This is a formal report that can be used as a means of communication within companies, which makes for transparent problem-solving that you can apply to the entire production or process chain.

Benefits of using the 8D method

The 8D method is one of the most popular problem-solving strategies for good reason. Its strength lies in teamwork and fact-based analyses to create a culture of continuous improvement —making it one of the most effective tools for quality managers. The benefits of using the 8D method include: 

Improved team-oriented problem-solving skills rather than relying on an individual to provide a solution

Increased familiarity with a problem-solving structure

A better understanding of how to use basic statistical tools for problem-solving

Open and honest communication in problem-solving discussions

Prevent future problems from occurring by identifying system weaknesses and solutions

Improved effectiveness and efficiency at problem-solving

Better collaboration = better problem solving

No matter how good a manager you are, production and process issues are inevitable. It’s how you solve them that separates the good from the great. The 8D method of problem solving allows you to not only solve the problem at hand but improve team collaboration, improve processes, and prevent future issues from arising. 

Try Asana’s project management tool to break communication barriers and keep your team on track.

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Quality-One

Eight Disciplines of Problem Solving (8D)

– Eight Disciplines of Problem Solving –

⇓   Introduction to 8D

⇓   What is 8D

⇓   Why Apply 8D

⇓   When to Apply 8D

⇓   How to Apply 8D

Quality and Reliability Support | Quality-One

Introduction to Eight Disciplines of Problem Solving (8D)

The Eight Disciplines of Problem Solving (8D) is a problem solving methodology designed to find the root cause of a problem, devise a short-term fix and implement a long-term solution to prevent recurring problems. When it’s clear that your product is defective or isn’t satisfying your customers, an 8D is an excellent first step to improving Quality and Reliability.

Ford Motor Company developed this problem solving methodology, then known as Team Oriented Problem Solving (TOPS), in the 1980s. The early usage of 8D proved so effective that it was adopted by Ford as the primary method of documenting problem solving efforts, and the company continues to use 8D today.

8D has become very popular among manufacturers because it is effective and reasonably easy to teach. Below you’ll find the benefits of an 8D, when it is appropriate to perform and how it is performed.

What is Eight Disciplines of Problem Solving (8D)

The 8D problem solving process is a detailed, team oriented approach to solving critical problems in the production process. The goals of this method are to find the root cause of a problem, develop containment actions to protect customers and take corrective action to prevent similar problems in the future.

The strength of the 8D process lies in its structure, discipline and methodology. 8D uses a composite methodology, utilizing best practices from various existing approaches. It is a problem solving method that drives systemic change, improving an entire process in order to avoid not only the problem at hand but also other issues that may stem from a systemic failure.

8D has grown to be one of the most popular problem solving methodologies used for Manufacturing, Assembly and Services around the globe. Read on to learn about the reasons why the Eight Disciplines of Problem Solving may be a good fit for your company.

8D - Problem Solving Format

Why Apply Eight Disciplines of Problem Solving (8D)

The 8D methodology is so popular in part because it offers your engineering team a consistent, easy-to-learn and thorough approach to solving whatever problems might arise at various stages in your production process. When properly applied, you can expect the following benefits:

  • Improved team oriented problem solving skills rather than reliance on the individual
  • Increased familiarity with a structure for problem solving
  • Creation and expansion of a database of past failures and lessons learned to prevent problems in the future
  • Better understanding of how to use basic statistical tools required for problem solving
  • Improved effectiveness and efficiency at problem solving
  • A practical understanding of Root Cause Analysis (RCA)
  • Problem solving effort may be adopted into the processes and methods of the organization
  • Improved skills for implementing corrective action
  • Better ability to identify necessary systemic changes and subsequent inputs for change
  • More candid and open communication in problem solving discussion, increasing effectiveness
  • An improvement in management’s understanding of problems and problem resolution

8D was created to represent the best practices in problem solving. When performed correctly, this methodology not only improves the Quality and Reliability of your products but also prepares your engineering team for future problems.

When to Apply Eight Disciplines of Problem Solving (8D)

The 8D problem solving process is typically required when:

  • Safety or Regulatory issues has been discovered
  • Customer complaints are received
  • Warranty Concerns have indicated greater-than-expected failure rates
  • Internal rejects, waste, scrap, poor performance or test failures are present at unacceptable levels

How to Apply Eight Disciplines of Problem Solving (8D)

The 8D process alternates inductive and deductive problem solving tools to relentlessly move forward toward a solution. The Quality-One approach uses a core team of three individuals for inductive activities with data driven tools and then a larger Subject Matter Expert (SME) group for the deductive activities through brainstorming, data-gathering and experimentation.

D0: Prepare and Plan for the 8D

Proper planning will always translate to a better start. Thus, before 8D analysis begins, it is always a good idea to ask an expert first for their impressions. After receiving feedback, the following criterion should be applied prior to forming a team:

Collect information on the symptoms

Use a Symptoms Checklist to ask the correct questions

Identify the need for an Emergency Response Action (ERA), which protects the customer from further exposure to the undesired symptoms

D1: Form a Team

A Cross Functional Team (CFT) is made up of members from many disciplines. Quality-One takes this principle one step further by having two levels of CFT:

  • The Core Team Structure should involve three people on the respective subjects: product, process and data
  • Additional Subject Matter Experts are brought in at various times to assist with brainstorming, data collection and analysis

Teams require proper preparation. Setting the ground rules is paramount. Implementation of disciplines like checklists, forms and techniques will ensure steady progress.  8D must always have two key members: a Leader and a Champion / Sponsor:

  • The Leader is the person who knows the 8D process and can lead the team through it (although not always the most knowledgeable about the problem being studied)
  • The Champion or Sponsor is the one person who can affect change by agreeing with the findings and can provide final approval on such changes

D2: Describe the Problem

The 8D method’s initial focus is to properly describe the problem utilizing the known data and placing it into specific categories for future comparisons. The “Is” data supports the facts whereas the “Is Not” data does not. As the “Is Not” data is collected, many possible reasons for failure are able to be eliminated. This approach utilizes the following tools:

  • Problem Statement
  • Affinity Diagram (Deductive tool)
  • Fishbone/Ishikawa Diagram (Deductive tool)
  • Problem Description

D3: Interim Containment Action

In the interim, before the permanent corrective action has been determined, an action to protect the customer can be taken. The Interim Containment Action (ICA) is temporary and is typically removed after the Permanent Correct Action (PCA) is taken.

  • Verification of effectiveness of the ICA is always recommended to prevent any additional customer dissatisfaction calls

D4: Root Cause Analysis (RCA) and Escape Point

The root cause must be identified to take permanent action to eliminate it. The root cause definition requires that it can be turned on or off, at will. Activities in D4 include:

  • Comparative Analysis listing differences and changes between “Is” and “Is Not”
  • Development of Root Cause Theories based on remaining items
  • Verification of the Root Cause through data collection
  • Review Process Flow Diagram for location of the root cause
  • Determine Escape Point, which is the closest point in the process where the root cause could have been found but was not

D5: Permanent Corrective Action (PCA)

The PCA is directed toward the root cause and removes / changes the conditions of the product or process that was responsible for the problem. Activities in D5 include:

  • Establish the Acceptance Criteria which include Mandatory Requirements and Wants
  • Perform a Risk Assessment /  Failure Mode and Effects Analysis (FMEA) on the PCA choices
  • Based on risk assessment, make a balanced choice for PCA
  • Select control-point improvement for the Escape Point
  • Verification of Effectiveness for both the PCA and the Escape Point are required

D6: Implement and Validate the Permanent Corrective Action

To successfully implement a permanent change, proper planning is essential. A project plan should encompass: communication, steps to complete, measurement of success and lessons learned. Activities in D6 include:

  • Develop Project Plan for Implementation
  • Communicate the plan to all stakeholders
  • Validation of improvements using measurement

D7: Prevent Recurrence

D7 affords the opportunity to preserve and share the knowledge, preventing problems on similar products, processes, locations or families. Updating documents and procedures / work instructions are expected at this step to improve future use. Activities in D7 include:

  • Review Similar Products and Processes for problem prevention
  • Develop / Update Procedures and Work Instructions for Systems Prevention
  • Capture Standard Work / Practice and reuse
  • Assure FMEA updates have been completed
  • Assure Control Plans have been updated

D8: Closure and Team Celebration

Teams require feedback to allow for satisfactory closure. Recognizing both team and individual efforts and allowing the team to see the previous and new state solidifies the value of the 8D process. Activities in D8 include:

  • Archive the 8D Documents for future reference
  • Document Lessons Learned on how to make problem solving better
  • Before and After Comparison of issue
  • Celebrate Successful Completion

8D - D0 Reference Card

8D and Root Cause Analysis (RCA)

The 8D process has Root Cause Analysis (RCA) imbedded within it. All problem solving techniques include RCA within their structure. The steps and techniques within 8D which correspond to Root Cause Analysis are as follows:

  • Problem Symptom is quantified and converted to “Object and Defect”
  • Problem Symptom is converted to Problem Statement using Repeated Whys
  • Possible and Potential Causes are collected using deductive tools (i.e. Fishbone or Affinity Diagram)
  • Problem Statement is converted into Problem Description using Is / Is Not
  • Problem Description reduces the number of items on the deductive tool (from step 3)
  • Comparative Analysis between the Is and Is Not items (note changes and time)
  • Root Cause theories are developed from remaining possible causes on deductive tool and coupled with changes from Is / Is Not
  • Compare theories with current data and develop experiments for Root Cause Verification
  • Test and confirm the Root Causes

Is Is Not Example

Example: Multiple Why Technique

The Multiple / Repeated Why (Similar to 5 Why) is an inductive tool, which means facts are required to proceed to a more detailed level. The steps required to determine problem statement are:

  • Problem Symptom is defined as an Object and Defect i.e. “Passenger Injury”
  • Why? In every case “SUV’s Roll Over”
  • Why? In every case, it was preceded by a “Blown Tire”
  • Why? Many explanations may be applied, therefore the team cannot continue with another repeated why past “Blown Tire”
  • Therefore, the Problem Statement is “Blown Tire”
  • Why? Low (Air) Pressure, Tire Defect (Degradation of an Interface) and High (Ambient) Temperature
  • Counter measures assigned to low pressure and tire defect

This example uses only 4 of the 5 Whys to determine the root causes without going further into the systemic reasons that supported the failure. The Repeated Why is one way to depict this failure chain. Fault Tree Analysis (FTA) could also be used.

3 Legged 5 Why

Learn More About Eight Disciplines of Problem Solving (8D)

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COMMENTS

  1. Guide: 8D Problem Solving - Learn Lean Sigma

    The 8D Problem-Solving methodology offers a structured, team-based approach to tackling challenges that can arise in any sector, be it manufacturing, public services, or logistics. This guide has walked you through each of the eight disciplines, offering best practices and highlighting common pitfalls to avoid.

  2. What is 8D? Eight Disciplines Problem Solving Process | ASQ

    The Eight Disciplines (8D) are a problem solving tool used to correct, identify and remove recurring issues halting the production process. Learn more about 8D analysis at ASQ.org.

  3. 8 Disiplines of Problem Solving (8D) - Learn Lean Sigma

    The 8D Problem Solving methodology is commonly known as “Eight Disciplines of Problem Solving” or simply “8D.” It is a structured, team-based approach to identifying, analyzing, and resolving problems, particularly in the areas of product quality and process efficiency.

  4. 8D: Tools and Techniques - Learn Lean Sigma

    Look no further than the 8D Problem-Solving Methodology —a comprehensive eight-step approach initially developed in the automotive industry but widely applicable across various sectors. This systematic method not only aids in diagnosing the root cause of a problem but also offers a roadmap for effective solutions.

  5. Eight disciplines problem solving - Wikipedia

    The 8D methodology was first described in a Ford manual in 1987. The manual describes the eight-step methodology to address chronic product and process problems. The 8Ds included several concepts of effective problem solving, including taking corrective actions and containing nonconforming items.

  6. What is 8D? A template for efficient problem-solving - Asana

    By determining the root causes of a problem, managers can use this method to establish a permanent corrective action and prevent recurring issues. First introduced by Ford, the 8D method offers a consistent way of identifying a problem and solution, making it optimal for organizational learning.

  7. 8D | Eight Disciplines of Problem Solving | Quality-One

    The Eight Disciplines of Problem Solving (8D) is a problem solving methodology designed to find the root cause of a problem, devise a short-term fix and implement a long-term solution to prevent recurring problems.

  8. What is 8D? Eight Disciplines for Problem Solving - Sixsigma DSI

    The LEAN 8D Problem Solving Process is a team-oriented, detailed approach to solving production problems. This method aims to identify the root cause of the problem, create containment measures to protect customers, and take corrective actions to prevent future problems.

  9. 8D Problem Solving Process - Solving Major Problems in a ...

    Figure 1: The 8D Problem Solving Process. The 8D Process works best in teams tasked with solving a complex problem with identifiable symptoms. However, you can also use this process on an individual level, as well. Applying the Tool. To use the 8D Process, address each of the disciplines listed below, in order.

  10. An Introduction to 8D Problem Solving | ASQ

    The 8D problem solving method is a scientific, systematic approach which has similarities to the DMAIC method. The overlap in the two methods is briefly discussed in this overview of the 8D approach. 8D is usually driven by the customer; as the process is meant to resolve a specific customer complaint.