Certified Exhaust Cleaning Specialist (CECS) The CECS exam dives deep into particulate filtration systems, regeneration cycles, and diagnostic protocols for heavy-duty diesel engines. You’ll need precision knowledge of catalytic converters, DPF maintenance procedures, and emission compliance standards. Real-world soot management and system troubleshooting round out the technical scope.
| Exam Name | Certified Exhaust Cleaning Specialist |
| Exam Code | CECS |
| Format | PDF & Practice Test Engine |
| Target Year | 2026 Updated |
| Features | 100% Verified Q&As |
