Pre-scans, In-Process scans and Post-scans are independent operations, all of which serve different purposes in the repair process. Kris and Barry discuss how simple repair steps may introduce new diagnostic touble codes (DTCs) as a result of the repair steps, rather than as a result of the incident. Addressing these DTCs is critical in restoring vehicle functions, and the various stages of scanning are important steps to communicate with the vehicle, to identify system status. We hope this helps! Share this video with your colleagues and others in the repair community! To learn more about SCRS or to join as a member, visit www.scrs.com. Comment below on new topics that would benefit you and your customer!