ISO 9001 Internal Audit- Checklist & Common Failures in 2025

A strong ISO 9001 Internal Audit keeps the organizations Quality Management System running. It evaluates gaps between and within the processes and identifies area for improvement. Internal Audit is the performance indicator of organization’s performance and keeps the system ready for external and certification audit.

In todays blog we will discuss what your company need to prepare for external or customer audit, the skillset that is required for competent internal auditors, what are the common findings in 2025 External Audits, and a complete internal audit checklist you can use immediately.

Kadmar Consultants understands the need of strong Internal Audit system and how it shapes your organization’s performance. Conducting the audit to satisfy certification need is one thing but to conduct an audit to review performance and drive culture of continuous improvement is another thing.

We provide both ISO 9001 Internal Auditor Training Courses for your team to achieve competency and conduct Internal Audit. Further we provide Internal Audit services for your organization and act as your admin and get you through certification audit.

What is ISO 9001 Internal Audit?

An internal audit reviews and validates the processes in the Quality Management System.

All processes are operating in Plan Do Check Act Cycle close loop and are continually improving.
Defined and standardize processes as per ISO 9001 requirement.
It aligns the scope of the organization with the process objectives and reviews the effectiveness of Quality Management System.
It is part of Continuous Improvement Tool that evaluates your system and resource competency.

Importance of Internal Audit

An effective Internal Audit helps manufacturers achieve competitive edge by reduce Cost of Poor Quality (CoPQ), eliminating repeat issues and customer complaints. Improvised On Time Delivery and ultimately reduce certification audit failures

External auditors frequently say:

“The quality of the internal audit program reflects the quality of the entire QMS.”

Frequency of Internal Audit

The entire Quality Management System is required to be audited over a period of 3 years, and all processes frequency depends on the risk factors associated with ach process.

Who Should Conduct the Internal Audit?

Competent Internal Auditors are required to conduct the audit as per ISO 9001 requirement. Internal Auditor should be competent and trained, understands process approach and risk-based thinking and can align organizations scope and purpose with each individual process objective.

Many organizations prefer external consultants to perform their internal audits as they have separate set of eyes to view organization performance and gap and can prevent certification audit failures due to expert experience.

ISO 9001 Internal Audit Checklist

Below is a comprehensive checklist covering major clauses and manufacturing-specific requirements.

Who are your interested parties?
What are your internal and external issues?
Documented process for interested parties is in place?
Scope and Quality Policy documented?
Objectives developed with clear role and responsibility?
RACI Matrix developed?
Risk Matrix documented?
Are employee training records maintained?
Equipment calibrated on time?
Documented information available?
Work instructions followed?
Inspections record available?
Good traceability record in place?
Complaint handling process in place?
NCRs recording and analysis process?
Corrective actions properly closed?
Suppliers evaluation and approval process?
Customer satisfaction measured?
KPIs monitoring and review process?
Internal audits completed annually?
Management review meetings conducted as per schedule?
Improvements tracked and verified?

Common Internal Audit Findings 2025

Poor work instruction process in place and employees not following the process.
Repeat operator errors and outdated work instructions on shop floor.
Outdated calibration equipment on shop floor and no traceability to master equipment.
Inspection records misrepresentation.
Repeat customer complaint and high internal scrap.
Training record not available.
No proof of monitoring KPIs or objectives.
Weak supplier performance evaluation.
No validation action in place for corrective action.

For 2025 there is a complete list of common audit failure and finding. To review the complete list for automotive, follow the blog IATF 16949 Non-Conformities and How To Avoid Them.

How to Prepare for an ISO Internal Audit

We provide expert driven ISO 9001 Internal Audit services, here is a guideline for your organization as well. Review your organization’s process map, scope and objective and validate all documentation matches actual workflow. All risk assessments are up to date and controls are followed. Contingency plan is in place as controls malfunction. Measurement System Analysis is another big area to focus on. Validate all equipment’s are calibrated at defined interval and competent resource is available. Supervisor should engage employees and all of them should be trained on core values of ISO 9001 requirements and organization’s purpose. Management Review should be conducted at regular interval, at least annually. Conduct preaudit assessment before the external audit and correct all the gaps.

Contact Us Today

Kadmar Consultants provides ISO 9001 Implementation, training and Internal Audit services for manufacturers and automotive organizations globally with regional support across Canada and the United States.

Author: Asma Rashid