This work presents a case study on the maintenance management process of a real company. The main objective was to apply Lean principles, using the DMAIC cycle (Define, Measure, Analyze, Improve, and Control) to identify failures, propose improvements, and enable control of the maintenance process, addressing both performance and sustainability aspects. In addition, the ‘Maintenance Failure Profile’ was developed using Business Intelligence software to monitor key operational indicators. During the ‘Define’ phase, the project’s scope, objectives, and limitations were established. Subsequently, in the ‘Measure’ phase, all available data were thoroughly examined. In the ‘Analyze’ phase, the causes of waste and inefficiencies were identified using an Ishikawa Diagram, and in the ‘Improve’ phase an Effort x Impact matrix was developed to select the causes that should be prioritized, enabling the creation of an action plan, using the 4W1H tool, to address these causes. In the final phase, ‘Control’, the ‘Maintenance Failure Profile’ was introduced to stratify data, monitor indicators, and track maintenance status in an automated and efficient manner. The key indicators related with sustainability and maintenance performance were selected during the project, and their control was made feasible by the implemented solutions.