3credit hour(s)Prerequisite:DETC 1110 + DETC 1150 + DETC 1210 + DETC 1240 This advanced course focuses on diesel aftertreatment systems and their integration with modern engine management. Students will study diesel oxidation catalysts (DOC), diesel particulate filters (DPF), selective catalytic reduction (SCR), and diesel exhaust fluid (DEF) systems. The course emphasizes interpreting sensor data, resolving emission-related fault codes, performing forced regenerations, and verifying system compliance with regulatory standards. Lab work reinforces testing procedures using OEM diagnostic software and scan tools, with a continued focus on safety, efficiency, and professional reporting.